CN113525149A

CN113525149A - Electric energy supply control method and device, electronic equipment and storage medium

Info

Publication number: CN113525149A
Application number: CN202110923846.2A
Authority: CN
Inventors: 王超; 方旭光
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2021-10-22

Abstract

The disclosure relates to the technical field of electric vehicle charging, in particular to an electric energy supply control method, an electric energy supply control device, electronic equipment and a storage medium, and solves the problem of stable electric energy supply, wherein the method comprises the following steps: and the power supply loop is controlled by all controllable switches connected in a full-bridge mode in a combined mode, the phase offset degree between a first control signal group and a second control signal group used for controlling all controllable switches is adjusted based on a target acquisition value and a target demand value corresponding to target type electric energy data, and the control is realized based on the adjusted first control signal group and the adjusted second control signal group. Therefore, according to the determined charging mode information, the phase offset degree between the first control signal group and the second control signal group for controlling the on-off of the power supply loop is adjusted by taking the acquisition value and the required value of the corresponding target type electric energy data as a basis for consideration, stable electric energy is provided for the power-supplied object, and the service life of the power-supplied object is prolonged.

Description

Electric energy supply control method and device, electronic equipment and storage medium

Technical Field

The present disclosure relates to the field of electric vehicle charging technologies, and in particular, to a method and an apparatus for controlling electric energy supply, an electronic device, and a storage medium.

Background

With the development of scientific technology and the increasing severity of energy problems, new energy will gradually grow into the middle and high strength provided by resources, and in the field of automobiles, the electric automobile technology is rapidly developed under the national support and advocation of new energy technology.

At present, with the continuous increase of the holding capacity of electric vehicles, the service life of the battery of the electric vehicle and the charging safety become the problems that people pay attention to widely, so that how to control the power supply of the electric vehicle becomes a technical problem to be solved urgently in order to ensure the safe operation of the electric vehicle and prolong the service life of the battery.

Disclosure of Invention

The embodiment of the disclosure provides an electric energy supply control method and device, an electronic device and a storage medium, which are used for solving the problem of stable electric energy supply.

The specific technical scheme provided by the embodiment of the disclosure is as follows:

in a first aspect, an electric energy supply control method is provided, which is applied to a control device, and includes:

responding to the acquired power supply configuration information, accessing a power supply object into a power supply loop, wherein the power supply configuration information comprises power supply mode information and demand values respectively corresponding to various types of electric energy data, and the power supply loop is controlled by all controllable switches connected in a full-bridge mode in a combined mode;

acquiring acquisition values of various types of electric energy data in the power supply loop, and determining phase offset degrees between a first control signal group and a second control signal group which are respectively used for controlling controllable switches on two groups of bridge arms on the same side, wherein the phase offset degrees are used for representing time delay between two controllable switches which can be conducted simultaneously;

determining a corresponding target acquisition value and a target required value according to target type electric energy data corresponding to the power supply mode information, and adjusting the phase offset degree based on a difference value between the target acquisition value and the target required value;

and respectively controlling corresponding controllable switches in the power supply circuit based on the adjusted first control signal group and the adjusted second control signal group.

Optionally, the acquiring the collection value of various types of electric energy data in the power supply circuit includes:

collecting various types of electric energy data in the power supply circuit by taking a preset time length as a period to obtain N groups of continuously collected collection values, wherein N is an integer;

determining target type electric energy data corresponding to the power supply mode information, and reordering the N groups of acquisition values based on acquisition values corresponding to the target type electric energy data;

and screening M groups of acquisition values with the arrangement sequence in the middle, and respectively taking the average values of the acquisition values corresponding to various electric energy data in the M groups of acquisition values as the acquisition values obtained in the power supply circuit, wherein M is an integer and is less than N.

Optionally, the adjusting the phase shift degree based on the difference between the target collection value and the target demand value includes:

and determining a difference value between the target acquisition value and the target required value, and determining an increased value of the phase offset degree based on a set first proportional adjustment factor and the difference value when the difference value is determined to exceed a first set threshold value, so that the time delay between two controllable switches which are simultaneously conducted is increased.

Optionally, after the respectively controlling each controllable switch in the power supply circuit based on the adjusted first control signal group and second control signal group, the method includes:

and if the first difference between the re-collected target type electric energy data and the corresponding target required value is determined to exceed the first set threshold, and the phase deviation degree reaches the set maximum deviation degree value, determining a down-regulation value of a control signal period based on the first difference and a set second proportional regulation factor, so that the number of control signal periods output in the first control signal group and the second control signal group is reduced by the down-regulation value within a set time dimension.

Optionally, after determining a down-regulation value of the control signal period based on the data difference value and the set scale adjustment factor, the method further includes:

and if the second difference between the collection value of the target type electric energy data which is continuously collected and the corresponding target required value is determined, and the second difference does not reach the first set threshold, determining an up-regulation value of a control signal period based on the second difference and a set third proportional adjustment factor, so that the number of control signal periods output in the first control signal group and the second control signal group is increased by the up-regulation value in a set time dimension.

and determining a difference value between the target acquisition value and the target required value, and determining a reduction value of the phase shift degree based on a set fourth proportional adjustment factor and the difference value when the difference value is determined not to exceed a second set threshold value, so that the time delay between two controllable switches which are simultaneously conducted is reduced.

Optionally, further comprising:

and if the power supply mode information is determined to be the constant voltage power supply mode, determining the voltage data as target type electric energy data corresponding to the constant voltage power supply mode, determining other types of electric energy data except the voltage data as auxiliary electric energy data, and stopping outputting the first control signal group and the second control signal group when the auxiliary electric energy data reaches the corresponding required value.

Optionally, further comprising:

and if the power supply mode information is determined to be the constant current power supply mode, determining the current data as target type electric energy data corresponding to the constant current power supply mode, determining other types of electric energy data except the current data as auxiliary electric energy data, and stopping outputting the first control signal group and the second control signal group when the auxiliary electric energy data reaches the corresponding required value.

Optionally, after the respectively controlling the corresponding controllable switches in the power supply circuit based on the adjusted first control signal group and second control signal group, the method further includes:

if the power supply stopping indication information sent by the power supply object is determined not to be received, returning to the step of acquiring the acquisition values of various types of electric energy data in the power supply loop; and if the power supply stopping instruction information sent by the power supply object is determined to be received, cutting off a power supply loop between the power supply device and the power supply object, and switching on a residual voltage consumption loop.

In a second aspect, an electric power supply control apparatus is provided, including:

the response unit is used for responding to the acquired power supply configuration information, accessing a power supply object into a power supply loop, wherein the power supply configuration information comprises power supply mode information and demand values which are respectively set corresponding to various types of electric energy data, and the power supply loop is controlled by all controllable switches connected in a full-bridge mode in a combined mode;

the determining unit is used for acquiring acquisition values of various types of electric energy data in the power supply loop and determining phase deviation degrees between a first control signal group and a second control signal group which are respectively used for controlling controllable switches on two groups of bridge arms on the same side, wherein the phase deviation degrees are used for representing time delay between two controllable switches which can be conducted simultaneously;

the adjusting unit is used for determining a corresponding target acquisition value and a target required value according to the target type electric energy data corresponding to the power supply mode information, and adjusting the phase offset degree based on a difference value between the target acquisition value and the target required value;

and the control unit is used for respectively controlling each corresponding controllable switch in the power supply circuit based on the adjusted first control signal group and the adjusted second control signal group.

Optionally, when acquiring the acquisition values of various types of electric energy data in the power supply circuit, the determining unit is configured to:

Optionally, when the phase shift is adjusted based on the difference between the target collection value and the target demand value, the adjusting unit is further configured to:

Optionally, after the controllable switches in the power supply circuit are respectively controlled based on the adjusted first control signal group and second control signal group, the control unit is configured to:

Optionally, after determining a down-regulation value of the control signal period based on the data difference value and the set scale adjustment factor, the adjusting unit is further configured to:

Optionally, when the phase shift is adjusted based on the difference between the target collection value and the target demand value, the adjusting unit is configured to:

Optionally, the control unit is further configured to:

Optionally, after respectively controlling each corresponding controllable switch in the power supply circuit based on the adjusted first control signal group and second control signal group, the control unit is further configured to:

In a third aspect, an electronic device is provided, including:

a memory for storing executable instructions;

a processor for reading and executing executable instructions stored in the memory to implement any of the above methods.

In a fourth aspect, a computer-readable storage medium is proposed, on which a computer program is stored, which, when being executed by a processor, carries out the method of any of the above.

The beneficial effects of this disclosure are as follows:

in the embodiment of the disclosure, a control device accesses a power supply loop to a power supply object in response to acquired power supply configuration information, where the power supply configuration information includes power supply mode information and demand values respectively corresponding to various types of electric energy data, the power supply loop is controlled by each controllable switch combination connected in a full-bridge manner, acquires acquisition values of various types of electric energy data in the power supply loop, determines phase offset degrees between a first control signal group and a second control signal group respectively used for controlling controllable switches on two sets of same-side bridge arms, the phase offset degrees are used for representing time delay between two controllable switches capable of being simultaneously turned on, determines a corresponding target acquisition value and a target demand value according to target type electric energy data corresponding to the power supply mode information, and determines a difference value between the target acquisition value and the target demand value based on the target acquisition value and the target demand value, and adjusting the phase deviation degree, and respectively controlling each controllable switch in the power supply loop based on the adjusted first control signal group and the second control signal group. Therefore, the control equipment can adjust the phase offset degree between the first control signal group and the second control signal group for controlling the on-off of the power supply loop by taking the acquisition value and the required value of the corresponding target type electric energy data as a basis for consideration according to the determined charging mode information, so that stable electric energy is provided for the power-supplied object, the charging safety is ensured, and the service life of the power-supplied object is prolonged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic flow chart illustrating power supply control according to an embodiment of the present disclosure;

FIG. 2a is a schematic diagram of a bridge circuit formed by controllable switches according to an embodiment of the present disclosure;

FIG. 2b is a schematic diagram of a first control signal group and a second control signal group according to an embodiment of the disclosure;

FIG. 2c is a schematic diagram of the adjusted first control signal group and the adjusted second control signal group according to the embodiment of the disclosure;

FIG. 2d is a schematic diagram of the adjusted first control signal group and the adjusted second control signal group according to the embodiment of the disclosure;

FIG. 3 is a schematic diagram of an application scenario in an embodiment of the present disclosure;

FIG. 4a is a schematic diagram of a control sequence in the constant voltage power supply mode according to the embodiment of the disclosure;

FIG. 4b is a schematic flow chart illustrating the power supply control in the constant voltage power supply mode according to the embodiment of the disclosure;

fig. 5a is a schematic diagram of a control sequence in the constant current power supply mode according to the embodiment of the disclosure;

fig. 5b is a schematic flow chart of power supply control in the constant current power supply mode according to the embodiment of the disclosure;

FIG. 6 is a schematic diagram of a logic structure of power supply control according to an embodiment of the present disclosure;

fig. 7 is a schematic physical structure diagram of power supply control in the embodiment of the present disclosure.

Detailed Description

In order to ensure the charging safety of an electric vehicle and prolong the service life of a battery of the electric vehicle, the embodiment of the disclosure provides an electric energy supply control method, an electric energy supply control device, an electronic device and a storage medium.

The preferred embodiments of the present disclosure will be described below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are merely for illustrating and explaining the present disclosure, and are not intended to limit the present disclosure, and that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.

Referring to fig. 1, which is a schematic flow chart of power supply control in the embodiment of the present disclosure, a detailed description is provided below with reference to fig. 1 for a power supply control process in the embodiment of the present disclosure.

It should be noted that, in the solution provided in the embodiment of the present disclosure, the control device adjusts the phase offset degree of the control signal based on the difference relationship between the collected value of the electrical energy data and the corresponding required value, and controls the power supply loop to perform the process of supplying electrical energy based on the adjusted control signal, which may be understood as a continuous cycle process, where the control device continuously repeats the above process before not receiving the power supply stop instruction sent by the power-supplied device, and the following specifically describes, by taking an example of an operation executed by the control device in a primary electrical energy supply control process.

Step 101: responding to the acquired power supply configuration information, accessing a power supply object into a power supply loop, wherein the power supply configuration information comprises power supply mode information and demand values respectively corresponding to various types of electric energy data, and the power supply loop is controlled by all controllable switches connected in a full-bridge mode in a combined mode.

After the control equipment is connected with a power-supplied object, power supply configuration information sent by the power-supplied object is received, wherein the established connection comprises two connections, one is a connection in communication, the other is a connection capable of transmitting a channel of a circuit, and the power supply configuration information comprises power supply mode information and demand values set respectively corresponding to various types of electric energy data.

For example, assuming that the control device is a charging pile and the supplied device is an electric vehicle, after the charging pile is connected with the electric vehicle through a charging gun, the charging pile receives power supply configuration information sent by the electric vehicle to obtain power supply mode information and demand values respectively corresponding to various types of electric energy data, wherein the power supply mode information at least comprises constant-voltage power supply mode information and constant-current power supply mode information, and the demand values corresponding to various types of electric energy data at least comprise demand values corresponding to current and demand values corresponding to voltage.

Further, the control device accesses the power supply object into a power supply loop in response to the acquired power supply configuration information, and the power supply loop is controlled by each controllable switch combination connected in a full bridge, wherein the controllable switches may be power-type switching devices such as Insulated Gate Bipolar Transistors (IGBTs).

Step 102: the method comprises the steps of obtaining acquisition values of various types of electric energy data in a power supply loop, and determining phase deviation degrees between a first control signal group and a second control signal group which are respectively used for controlling controllable switches on two groups of bridge arms on the same side, wherein the phase deviation degrees are used for representing time delay between two controllable switches which can be conducted simultaneously.

The control equipment acquires the acquisition values of various types of electric energy data acquired in the power supply loop after the power supply object is accessed into the power supply loop, wherein the various types of electric energy data at least comprise current data and voltage data.

It should be noted that, in the embodiment of the present disclosure, when acquiring the acquisition values of various types of electric energy data in the power supply circuit, a preset time length may be used as a period, various types of electric energy data are acquired in the power supply circuit, N groups of continuously acquired acquisition values are obtained, where N is an integer, the target type electric energy data corresponding to the power supply mode information is determined, the N groups of acquisition values are reordered based on the acquisition values corresponding to the target type electric energy data, then M groups of acquisition values with the arrangement order in the middle are selected, and the average of the acquisition values corresponding to various types of electric energy data in the M groups of acquisition values are respectively used as the acquisition values acquired in the power supply circuit, M is an integer, and M is smaller than N.

For example, assume that the preset time length is 1s, N is 10, M is 4, and the power supply mode information is the constant current power supply mode. The control device collects the electric energy data transmitted to the supplied device in the power supply loop every 1s through the voltage collection module and the current collection module, and continuously collects 10 groups of electric energy data, wherein one group of electric energy data comprises one current data and one voltage data. And considering that the received power supply mode information is a constant-current power supply mode, current data is used as target type electric energy data in the power supply mode, and then 10 groups of obtained electric energy data are sorted according to actual processing requirements and according to any sequence of the current data from small to large or from large to small, furthermore, 4 middle groups of electric energy data, namely 4-7 electric energy data are screened out from the 10 groups of reordered electric energy data, and the average value of the acquisition values of all types of electric energy data in the 4 groups of electric energy data is calculated to be used as the acquired electric energy data.

Therefore, by screening the electric energy data and taking the average value of the M groups of electric energy data with the arrangement serial numbers in the middle as the acquisition value, the accuracy of the data is improved to a certain extent, the influence of electric energy data fluctuation on sampling is avoided, the acquisition of various electric energy data can reflect the power supply condition in a period of time, and the basis is provided for improving the electric energy supply control precision.

Further, the control device determines a phase offset degree between the first control signal group and the second control signal group, which are respectively used for controlling the controllable switches on the two groups of bridge arms on the same side, and the phase offset degree is used for representing time delay between the two controllable switches which can be simultaneously conducted.

It should be noted that, in the embodiment of the present disclosure, when the controllable switches in the power supply circuit are connected in a full bridge manner, the control signals in the first control signal group and the second control signal group for controlling the controllable switches on the two sets of bridge arms on the same side may be Pulse Width Modulation (PWM) signals, at this time, the phase offset degree specifically refers to a deviation degree between two PWM signals in the first PWM control signal group and the second PWM control signal group, where the deviation degree is between the two PWM signals and is used for controlling two controllable switches that are simultaneously turned on in the bridge circuit, and the deviation degree may be represented as a conduction time delay between two controllable switches that are supposed to be simultaneously turned on in the bridge circuit. In addition, the difference between the conduction time and the conduction time delay in one period of one control signal can be determined as the actual conduction time of a group of controllable switches which are conducted simultaneously.

In the embodiment of the present disclosure, when the power supply circuit is just turned on, the control device may adopt a first control signal group and a second control signal group having an initial phase offset degree for controlling each controllable switch, wherein a maximum offset degree value is provided between the first control signal group and the second control signal group, and the initial phase offset degree is greater than 0 and smaller than the maximum offset degree value, so that the phase offset degree has a room for up and down adjustment.

For example, referring to fig. 2a and 2b, fig. 2a is a schematic diagram of a bridge circuit composed of controllable switches in the embodiment of the present disclosure, Q1-Q4 are respectively 4 controllable switches, a bridge arm where Q1 is located and a bridge arm where Q4 is located are referred to as a group of same-side bridge arms, and a bridge arm where Q2 is located and a bridge arm where Q3 is located are referred to as a group of same-side bridge arms; fig. 2b is a schematic diagram of a first control signal group and a second control signal group in the embodiment of the disclosure. According to the schematic content of fig. 2b, the first control signal group includes control signals for controlling the on/off of Q1 and Q4, and the second control signal group includes control signals for controlling the on/off of Q2 and Q3, and the phase shift is as shown in fig. 2b, for controlling the time delay between the control signals of controllable switches Q1 and Q2 that are turned on simultaneously.

Therefore, on the basis of the index of the phase offset degree, the conduction condition of each controllable switch in the power supply loop can be controlled, and on the basis of the phase offset degree, the conduction duration of the controllable switch can be limited under the condition that the longer the conduction time is known, the higher the output electric energy data is, so that a basis is provided for the subsequent adjustment and control of the electric energy data.

Step 103: and determining a corresponding target acquisition value and a target required value according to the target type electric energy data corresponding to the power supply mode information, and adjusting the phase offset degree based on a difference value between the target acquisition value and the target required value.

The control equipment acquires target type electric energy data corresponding to power supply mode information and acquires a target acquisition value and a target demand value corresponding to the target type electric energy data, wherein the acquisition value corresponding to the target type electric energy data in the acquisition values of various types of acquired electric energy data is determined as the target acquisition value, and the demand value corresponding to the target type electric energy data in the demand values set for various types of electric energy data is determined as the target demand value.

For example, if the power supply mode information is a constant voltage power supply mode, the corresponding target type electric energy data is a voltage; assuming that the power supply mode information is a constant current power supply mode, the corresponding target type electric energy data is current.

It should be noted that, since the present disclosure intends to adjust the acquired value of the circuit output by means of phase adjustment between the control signals in the case that the acquired value is different from the required value, the dead time in each group of control signals can be considered to be the same for the additional influencing factors, such as the first control signal group and the second control signal group.

Further, the control device adjusts the phase shift degree between the first control signal group and the second control signal group based on a target collection value and a target demand value corresponding to the target type electric energy data, wherein the following two conditions exist for adjusting the phase shift degree corresponding to different magnitude relations between the target collection value and the target demand value:

in the first case, the target collection value corresponding to the target type electric energy data is higher than the target demand value.

The control device determines a first difference between a target acquisition value and a target required value corresponding to target type electric energy data, and determines an increase value of the phase shift degree based on a set first proportional adjustment factor and the first difference when the first difference is determined to exceed a first set threshold, so as to increase time delay between two controllable switches which are simultaneously switched on, wherein a value of the first proportional adjustment factor is set according to actual processing requirements, for example, a number between 0 and 1 or a number greater than 1 may be taken, and the value of the first proportional adjustment factor is not specifically limited herein.

Specifically, the control device determines a target collection value and a target demand value corresponding to the target type electric energy data, determines a difference between the target collection value and the target demand value, and compares the difference with a first set threshold, where the first set threshold may be 0, or a corresponding positive value may be set according to actual configuration requirements. When it is determined that the difference is greater than the first set threshold, it may be determined that the collected value is greater than the demand value, so that the supply of electric energy needs to be reduced.

And then pertinence, the control device adjusts the first control signal group and the second control signal group, so that the time delay between the two controllable switches which can be conducted simultaneously is increased, the time length for which the two controllable switches can be conducted simultaneously is reduced, wherein when the first control signal group and the second control signal group are adjusted, the adjustment can be carried out in a proportional adjustment mode, and the product of the first difference value and the set first proportional adjustment factor is used as the adjusted size of the phase offset degree.

For example, assuming that the first difference is 10 and the first scale adjustment factor is 0.8, the product of the two is 8, i.e. the phase offset between the first control signal group and the second control signal group is adjusted by 8 unit times.

For another example, referring to fig. 2c, which is a schematic diagram of the first control signal group and the second control signal group after adjustment in the embodiment of the present disclosure, fig. 2c shows a position corresponding to an initial phase shift degree and a position corresponding to an adjusted phase shift degree, respectively, and it can be determined that the time for the control signal for controlling Q1 and the control signal for controlling Q2 to be simultaneously turned on decreases after the phase shift degree increases, so that the output power decreases correspondingly.

It should be noted that, in the embodiment of the present disclosure, in different adjustment processes, the adopted first ratio adjustment factors may be different, and specific values of the first ratio adjustment factors may be configured by themselves according to actual usage needs, which is not described herein again.

In this way, when the collected value is determined to be higher than the required value, the conduction time of the two controllable switches which are simultaneously conducted is reduced by increasing the phase shift degree, so that the power supplied to the powered device is reduced, and the target collected value of the determined target power data is changed towards the target required value.

Further, it should be noted that, in a scenario of case one, if a first difference between a collected value of the target type electrical energy data collected again and a corresponding target demand value is determined, and the phase shift degree exceeds the first set threshold, and the phase shift degree reaches a set maximum value of the shift degree, a down-regulation value of a control signal period is determined based on the first difference and a set second proportional adjustment factor, so that the number of control signal periods output in the first control signal group and the second control signal group is reduced by the down-regulation value within a set time dimension, where a value of the second proportional adjustment factor is set according to an actual processing requirement, for example, a number between 0 and 1 may also be a number greater than 1, and a specific limitation is not made on a value of the second proportional adjustment factor in this application.

That is to say, when it is determined that the acquisition value of the target type electric energy data is continuously higher than the required value, the phase offset degree needs to be continuously increased, but the adjustment of the phase offset degree is not unlimited, in order to ensure the normal operation of the power supply loop, a maximum value of the phase offset degree is usually set in advance for the phase offset degree, and when it is determined that the adjusted phase offset degree reaches the maximum value of the phase offset degree, it is indicated that the phase offset degree cannot be continuously adjusted.

At this time, in order to continue to control the drop of the power supplied to the device to be powered in the power supply loop, the control device may first determine a data difference between a target collection value of the currently collected target power data and a corresponding target demand value, and then calculate a down adjustment value of the control signal period based on a set scale adjustment factor and the data difference in a proportional adjustment manner, so that the number of control signal periods output in the first control signal group and the second control signal group is reduced by the corresponding down adjustment value within a set time dimension.

For example, assuming that in the constant-current charging mode, the current data collected in real time is 2.5A, the corresponding target required value is 1.5A, the second difference is 2.5-1.5 ═ 1A, it is determined that the current phase offset has reached the maximum value of the phase offset, and the correspondingly set second scaling factor is 0.9, the current down-regulation value is 1 × 0.9 ═ 0.9, and then according to the actual needs, the down-regulation value can be approximated to 1 by selectively rounding up, or rounding down, assuming that the set time dimension is 2ms, and the control signal cycles output within the current 2ms are 5, and without changing the control signal frequency and duty ratio, the control signal cycles output within the current 2ms are adjusted to 4, that is, the control signal of one cycle is not output.

Further, when the adjustment of the electric energy is realized by adjusting the number of control signal cycles in unit time, if a second difference between a collection value of target type electric energy data which is continuously collected and a corresponding target required value is determined, and the second difference does not reach the first set threshold, an up-regulation value of the control signal cycle is determined based on the second difference and a set third proportional regulation factor, so that the number of control signal cycles output from the first control signal group and the second control signal group is increased by the up-regulation value in a set time dimension, wherein the value of the third proportional regulation factor is set according to actual processing needs, for example, a number between 0 and 1 or a number greater than 1 is taken, and the value of the third proportional regulation factor is not specifically limited herein.

That is, in the embodiment of the present disclosure, if it is determined that the current phase is the phase of adjusting the number of control signal cycles per unit time, when it is determined that the collection value of the target type of electric energy data to be continuously collected is lower than the target demand value, the processing is continuously performed by adjusting the number of control signal cycles per unit time, in other words, for the initial control signal, the number of cycles output per unit time may be an intermediate value, so that the number of cycles output has an adjustable space, for example, if a control signal of 10 cycles at maximum per unit time is assumed, a control signal of 5 cycles may be output per unit time when the control signal is initially output. Therefore, until the number of the control signal periods output in unit time cannot be adjusted, the control equipment can continuously judge whether the adjustment can be continuously carried out in a mode of adjusting the phase offset degree according to the collected electric energy data, and further, the corresponding processing mode is adopted for processing.

Therefore, the reduction of the electric energy data acquisition value can be assisted by adjusting the number of the periods of the control signal output, so that the target type electric energy data can tend to the direction change of the corresponding target demand value.

And in the second situation, the target acquisition value corresponding to the target type electric energy data is lower than the target demand value.

The control device determines a difference between a target acquisition value and a target required value corresponding to the target type electric energy data, and determines a reduction value of the phase shift degree based on a fourth proportional adjustment factor and the difference when it is determined that the difference does not exceed a second set threshold, so as to reduce the time delay between two controllable switches which are simultaneously switched on, wherein the value of the fourth proportional adjustment factor is set according to actual processing requirements, for example, a number between 0 and 1 or a number greater than 1 may be taken, and the value of the fourth proportional adjustment factor is not specifically limited herein.

Specifically, after determining a target collection value and a target required value corresponding to the target type electric energy data, the control device calculates a difference between the target collection value and the target required value, and compares a magnitude relationship between the difference and a set second set threshold, where the second set threshold may be 0, or may be a value according to actual processing requirements.

And when the control device determines that the difference does not exceed the second set threshold, determining a reduced value of the phase offset in a proportional adjustment manner based on the difference and a set fourth proportional adjustment factor, where a calculation manner of the reduced value of the phase offset is the same as a calculation manner of the increased value of the phase offset in the first case, and details are not repeated here.

For example, referring to fig. 2d, which is a schematic diagram of the first and second adjusted control signal groups according to the embodiment of the disclosure, fig. 2d illustrates the positions corresponding to the initial phase shift degrees and the adjusted phase shift degrees, respectively, and it can be determined that the time for the control signal for controlling Q1 and the control signal for controlling Q2 to be simultaneously turned on increases after the phase shift degrees decrease, so that the output power is correspondingly increased.

Thus, when it is determined that the collected value of the target type electric energy data is lower than the demand value, the conduction time of the two controllable switches that are simultaneously conducted is increased by decreasing the phase shift degree, so that the electric energy supplied to the supplied electric equipment is increased to change the collected value of the electric energy data toward the demand value.

Specifically, when the difference between the target collection value and the target demand value of the target type electric energy data is higher than the second set threshold but lower than the first set threshold, the value of the target collection value may be considered to be approximately the same as the target demand value, and at this time, the current phase offset may be kept controlled until the electric energy supply is finished without adjusting the phase offset between the first control signal group and the second control signal group.

Step 104: and respectively controlling each corresponding controllable switch in the power supply loop based on the adjusted first control signal group and the second control signal group.

And after adjusting the phase offset degree between the first control signal group and the second control signal group based on the difference between the target acquisition value and the target required value corresponding to the target electric energy data, the control equipment respectively controls each corresponding controllable switch in the power supply circuit based on the adjusted first control signal group and the adjusted second control signal group.

It should be noted that, in the embodiment of the present disclosure, when the control device adjusts the phase shift degree between the first control signal group and the second control signal group based on the difference between the collected value and the required value of the target electrical energy data, other electrical energy data except the target electrical energy data in the obtained various types of electrical energy data may be used as auxiliary electrical energy data to assist in controlling the output of the first control signal group and the second control signal group.

In some possible embodiments of the present disclosure, if it is determined that the power supply mode information is the constant voltage power supply mode, the control device determines the voltage data as target type electric energy data corresponding to the constant voltage power supply mode, determines other types of electric energy data except the voltage data as auxiliary electric energy data, and stops outputting the first control signal group and the second control signal group when it is determined that the auxiliary electric energy data reaches the corresponding requirement value.

For example, in a constant voltage power supply mode, the control device sends a first control signal group and a second control signal group to control each corresponding controllable switch in the power supply loop, and meanwhile, other types of electric energy data, such as current data, are used as auxiliary electric energy data, and when it is determined that the collection value of the electric energy data exceeds a set required value, although a power supply stopping instruction sent by the power supply device is not received, in order to ensure the power supply safety of the power supply loop, the control device stops outputting the first control signal group and the second control signal group, so that the bridge-type loop is temporarily disconnected for a certain time, such as 2s, so that a certain recovery time can be given to the power supply loop, and after the bridge-type loop is disconnected for a certain time, the bridge-type loop is automatically connected, and control is performed based on the first control signal group and the second control signal group at the beginning.

Similarly, in other possible embodiments of the present disclosure, if it is determined that the power supply mode information is the constant current power supply mode, the control device determines the current data as the target type electric energy data corresponding to the constant current power supply mode, determines other types of electric energy data except the current data as the auxiliary electric energy data, and stops outputting the first control signal group and the second control signal group when it is determined that the auxiliary electric energy data reaches the corresponding required value.

Therefore, the first control signal group and the second control signal group which are output can be determined in an auxiliary mode based on the auxiliary electric energy data, normal operation of the power supply circuit is guaranteed, and reliability of operation of the power supply circuit is improved.

Further, if the control device determines that the power supply stop instruction information sent by the power-supplied object is not received, the control device returns to the step of acquiring the acquisition values of various types of electric energy data in the power supply loop in step 102.

And if the control equipment determines that the power supply stopping instruction information sent by the power supply object is received, the control equipment cuts off a power supply loop between the control equipment and the power supply object and switches on a residual voltage consumption loop.

Specifically, when the control device determines that the power supply stop instruction information sent by the power supply object is received, the control device stops outputting the first control signal group and the second control signal group, namely, the power supply loop with the power supply object is disconnected, and when the residual voltage is detected, the control device is connected to a residual voltage consumption loop, so that the residual voltage is consumed, wherein the residual voltage consumption loop at least comprises components capable of consuming electric energy, such as a resistor and the like.

Like this, with the help of the residual voltage consumption return circuit, can consume the residual voltage in the circuit fast, realize discharging fast, avoid residual voltage to cause the injury to the human body.

The technical solution proposed in the embodiments of the present disclosure is further described in detail below with reference to specific application scenarios.

Referring to fig. 3, which is a schematic diagram of an application scenario in the embodiment of the present disclosure, including a charged device: electric vehicle, control equipment: fill electric pile to and the electric wire netting that provides the electric energy.

The power supply in the charging pile is connected with a power grid, obtains electric energy from the power grid, converts alternating current obtained from the power grid into direct current for charging, and at least comprises a control component and the power supply, wherein, the control module can receive the request information sent by the Battery Management System (BMS) of the electric automobile, and according to the actual operation condition, in different power supply stages, corresponding control signals are sent out to control the connection of the power supply and the electric automobile, the control component and the power supply CAN communicate with each other by a Controller Area Network (CAN), the power supply can be connected with a power battery of the electric automobile by adopting a charging wire to realize electric energy transmission with the electric automobile, the connecting wire is configured according to the needs in practical application, for example, the connecting wire can be a charging gun for connecting a charging pile and an electric automobile. In addition, a detection device is arranged in the power supply and used for detecting various types of electric energy data in a power supply loop formed by the electric automobile and detecting residual voltage in the power supply after the power supply is finished.

The related parts in the electric automobile comprise a BMS and a power battery, wherein the electric automobile is in communication connection with a charging pile through the BMS in a CAN communication mode, so that charging mode information and demand values for various types of electric energy data CAN be fed back to the charging pile, the charging pile CAN acquire the charging requirement of the electric automobile and CAN perform targeted control based on the charging requirement, and the BMS CAN be further connected with the power battery to acquire the working state of the power battery and various types of related data. The power battery is used for storing electric energy and providing energy sources during the running process of the electric automobile.

The power supply system comprises a power grid, a power supply in the charging pile, a power battery in the electric automobile, a controllable switch in full-bridge connection, and a main power supply part of a power supply loop, as indicated by a part selected by a dotted line in fig. 3.

Under this scene, based on the scheme that this disclosed embodiment provided, can send first control signal group and second control signal group based on the actual needs of charging of electric automobile to the realization is controlled the steerable switch in the power supply loop, wherein, initial phase skew degree has between first control signal group and the second control signal group, and phase skew degree is arranged in the first control signal group of representation and the second control signal group, the time delay between the two steerable switches that can switch on simultaneously, include the complementary control signal of two signals respectively in first control signal group and the second control signal group for control the steerable switch on the bridge arm on the same side in the full-bridge circuit, the control signal that the control in same time quantum was switched on and the control signal that the control was switched off call complementary control signal. And then adjusting the phase offset degree based on the relation between the collection value and the required value which are actually collected in the power supply loop, so that the target collection value corresponding to the target type electric energy data can gradually approach to the corresponding target required value, and the stable electric energy supply control of the power battery is realized.

Next, referring to fig. 4a and fig. 4b, a power supply control process in the constant voltage mode in the embodiment of the present disclosure is described, where fig. 4a is a schematic control sequence diagram in the constant voltage power supply mode in the embodiment of the present disclosure, and fig. 4b is a schematic flow diagram of power supply control in the constant voltage power supply mode in the embodiment of the present disclosure. According to the process illustrated in fig. 4a, after the charging pile collects the voltage information and the current information, sampling and filtering are performed on the voltage signal and the current signal to determine a voltage collection value and a current collection value, then, in the constant voltage power supply mode, a difference relationship between the voltage collection value and a voltage demand value sent by the electric vehicle is compared, based on the difference relationship, phase adjustment or width adjustment is performed on PWM signals used for controlling each controllable switch in the power supply loop, and two groups of PWM signals are output.

The adjustment process is described below with reference to the flow of fig. 4 b:

step 401: and sampling and filtering the voltage signal and the current signal to obtain a current acquisition value and a voltage acquisition value.

Step 402: and determining to adopt a constant voltage power supply mode, acquiring the acquisition value and the required value of the voltage data, and acquiring the acquisition value and the required value corresponding to the current data.

Step 403: and judging whether the acquired value of the current data is larger than the required value, if so, executing a step 404, and otherwise, executing a step 405.

Step 404: the output of the PWM signal is suspended.

Step 405: and judging whether the acquired value of the voltage data is greater than the required value, if so, executing step 407, and otherwise, executing step 406.

Step 406: the degree of phase shift of the control signal is reduced.

Specifically, after the execution of step 406 is completed, the execution returns to step 401.

Step 407: the degree of phase shift of the control signal is increased.

Step 408: and (4) judging whether the phase deviation degree reaches the maximum deviation degree, if so, executing the step 409, otherwise, returning to the step 401.

Step 409: and sampling and filtering the voltage signal and the current signal to obtain a current acquisition value and a voltage acquisition value.

Step 410: and judging whether the acquired value of the current data is larger than the required value, if so, executing a step 411, and otherwise, executing a step 412.

Step 411: the output of the PWM signal is suspended.

Step 412: and judging whether the acquired value of the voltage data is greater than the required value, if so, executing a step 414, and otherwise, executing a step 413.

Step 413: the number of PWM signals output per unit time is reduced.

Specifically, after the execution of step 413 is completed, the execution returns to step 409.

Step 414: the number of PWM outputs per unit time is increased.

Step 415: and judging whether the PWM quantity output in unit time reaches the maximum value, if so, executing the step 401, otherwise, executing the step 409.

It should be noted that, in the process of executing any one of the steps illustrated in fig. 4b, if the processing device receives the power supply stop instruction information sent by the power-supplied device, the output of the PWM signal is stopped, and when detecting that the residual voltage exists, the residual voltage consuming circuit is connected.

Next, referring to fig. 5a and fig. 5b, a power supply control process in the constant current mode in the embodiment of the present disclosure is described, where fig. 5a is a schematic control sequence diagram in the constant current power supply mode in the embodiment of the present disclosure, and fig. 5b is a schematic flow diagram of power supply control in the constant current power supply mode in the embodiment of the present disclosure. According to the process illustrated in fig. 5a, after the charging pile collects the voltage information and the current information, sampling and filtering are performed on the voltage signal and the current signal, a voltage collection value and a current collection value are determined, then, in a constant current power supply mode, a difference value relationship between the current collection value and a current demand value sent by the electric vehicle is compared, based on the difference value relationship, phase adjustment or width adjustment is performed on PWM signals used for controlling each controllable switch in the power supply loop, and two groups of PWM signals are output.

The adjustment process is described below with reference to the flow of fig. 5 b:

step 501: and sampling and filtering the voltage signal and the current signal to obtain a current acquisition value and a voltage acquisition value.

Step 502: and determining to adopt a constant current power supply mode, acquiring the acquisition value and the required value of the current data, and acquiring the acquisition value and the required value corresponding to the voltage data.

Step 503: and judging whether the acquired value of the voltage data is greater than the required value, if so, executing step 504, and otherwise, executing step 505.

Step 504: the output of the PWM signal is suspended.

Step 505: and judging whether the acquired value of the current data is larger than the required value, if so, executing step 407, otherwise, executing step 506.

Step 506: the degree of phase shift of the control signal is reduced.

Specifically, after the execution of step 506 is completed, the execution returns to step 501.

Step 507: the degree of phase shift of the control signal is increased.

Step 508: and (4) judging whether the phase deviation degree reaches the maximum deviation degree, if so, executing a step 509, otherwise, returning to execute the step 501.

Step 509: and sampling and filtering the voltage signal and the current signal to obtain a current acquisition value and a voltage acquisition value.

Step 510: and judging whether the acquired value of the voltage data is greater than the required value, if so, executing step 511, otherwise, executing step 512.

Step 511: the output of the PWM signal is suspended.

Step 512: and judging whether the acquired value of the current data is larger than the required value, if so, executing step 514, and otherwise, executing step 513.

Step 513: the number of PWM signals output per unit time is reduced.

Specifically, after the execution of step 513 is completed, the execution returns to step 509.

Step 514: the number of PWM outputs per unit time is increased.

Step 515: and judging whether the PWM quantity output in the unit time reaches the maximum value, if so, executing the step 501, and otherwise, executing the step 509.

It should be noted that, in the process of executing any one of the steps illustrated in fig. 5b, if the processing device receives the power supply stop instruction information sent by the power-supplied device, the output of the PWM signal is stopped, and when detecting that the residual voltage exists, the residual voltage consuming circuit is connected.

Based on the same inventive concept, referring to fig. 6, which is a schematic diagram of a logic structure of power supply control in an embodiment of the present disclosure, the present disclosure provides a power supply control device, including:

a response unit 601, configured to access a power supply loop to a power supply object in response to acquired power supply configuration information, where the power supply configuration information includes power supply mode information and demand values set respectively corresponding to various types of electric energy data, and the power supply loop is controlled by each controllable switch combination connected in a full-bridge manner;

a determining unit 602, configured to obtain collected values of various types of electric energy data in the power supply loop, and determine a phase offset degree between a first control signal group and a second control signal group, where the first control signal group and the second control signal group are respectively used to control controllable switches on two groups of bridge arms on the same side, and the phase offset degree is used to represent a time delay between two controllable switches that can be simultaneously turned on;

an adjusting unit 603, configured to determine a corresponding target acquisition value and a target required value according to the target type electric energy data corresponding to the power supply mode information, and adjust the phase offset degree based on a difference between the target acquisition value and the target required value;

a control unit 604, configured to control each corresponding controllable switch in the power supply circuit based on the adjusted first control signal group and second control signal group.

Optionally, when acquiring the acquisition values of various types of electric energy data in the power supply circuit, the determining unit 602 is configured to:

Optionally, when the phase shift is adjusted based on the difference between the target collection value and the target demand value, the adjusting unit 603 is further configured to:

Optionally, after respectively controlling each controllable switch in the power supply loop based on the adjusted first control signal group and second control signal group, the control unit 604 is configured to:

Optionally, after determining a down-regulation value of the control signal period based on the data difference value and the set scale adjustment factor, the adjusting unit 603 is further configured to:

Optionally, when the phase shift is adjusted based on the difference between the target acquisition value and the target demand value, the adjusting unit 603 is configured to:

Optionally, the control unit 604 is further configured to:

Optionally, after respectively controlling corresponding controllable switches in the power supply circuit based on the adjusted first control signal group and second control signal group, the control unit 604 is further configured to:

Based on the same inventive concept, referring to fig. 7, which is a schematic diagram of an entity structure of an electric energy supply control apparatus in an embodiment of the present disclosure, an embodiment of the present disclosure provides an electronic device, an apparatus 700, and the apparatus 700 may be a server or a terminal device with a processing function. Referring to fig. 7, apparatus 700 includes a processing component 722 that further includes one or more processors and memory resources, represented by memory 732, for storing instructions, such as applications, that are executable by processing component 722. The application programs stored in memory 732 may include one or more modules that each correspond to a set of instructions. Further, the processing component 722 is configured to execute instructions to perform the methods described above.

The apparatus 700 may also include a power component 726 configured to perform power management of the apparatus 700, a wired or wireless network interface 750 configured to connect the apparatus 700 to a network, and an input output (I/O) interface 758. The apparatus 700 may operate based on an operating system stored in the memory 732.

Based on the same inventive concept, embodiments based on power supply control in the embodiments of the present disclosure provide a computer-readable storage medium, when instructions in the storage medium are executed by an electronic device, the electronic device is enabled to execute the above power supply control method.

The computer storage media may be any available media or data storage device that can be accessed by a computer, including but not limited to magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

To sum up, in the embodiment of the present disclosure, a control device accesses a power supply loop to a power supply object in response to acquired power supply configuration information, where the power supply configuration information includes power supply mode information and demand values respectively set corresponding to various types of electric energy data, the power supply loop is controlled by each controllable switch combination connected in a full bridge, acquires acquisition values of various types of electric energy data in the power supply loop, determines phase offset degrees between a first control signal group and a second control signal group respectively used for controlling controllable switches on two sets of same-side bridge arms, the phase offset degrees are used for representing time delay between two controllable switches capable of being simultaneously turned on, determines a corresponding target acquisition value and a target demand value according to target type electric energy data corresponding to the power supply mode information, and determines a difference between the target acquisition value and the target demand value based on the difference between the target acquisition value and the target demand value, and adjusting the phase deviation degree, and respectively controlling each controllable switch in the power supply loop based on the adjusted first control signal group and the second control signal group. Therefore, the control equipment can adjust the phase offset degree between the first control signal group and the second control signal group for controlling the on-off of the power supply loop by taking the acquisition value and the required value of the corresponding target type electric energy data as a basis for consideration according to the determined charging mode information, so that stable electric energy is provided for the power-supplied object, the charging safety is ensured, and the service life of the power-supplied object is prolonged.

As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present disclosure have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the disclosure.

It will be apparent to those skilled in the art that various changes and modifications may be made to the disclosed embodiments without departing from the spirit and scope of the disclosed embodiments. Thus, if such modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to encompass such modifications and variations.

Claims

1. An electric energy supply control method applied to a control apparatus, comprising:

2. The method of claim 1, wherein the obtaining of the collected values of the types of power data in the power supply circuit comprises:

3. The method of claim 1, wherein said adjusting the degree of phase shift based on the difference between the target acquisition value and the target demand value comprises:

4. The method of claim 3, wherein the separately controlling each controllable switch in the power supply loop based on the adjusted first and second control signal groups comprises:

5. The method of claim 4, wherein after determining a down-regulation value for a control signal period based on the data difference value and a set scaling factor, further comprising:

6. The method of claim 1, wherein said adjusting the degree of phase shift based on the difference between the target acquisition value and the target demand value comprises:

7. The method of any one of claims 1-6, further comprising:

8. The method of any one of claims 1-6, further comprising:

9. The method of any of claims 1-6, wherein after the individually controlling corresponding ones of the controllable switches in the power supply loop based on the adjusted first and second control signal groups, further comprising:

10. An electric power supply control device characterized by comprising:

11. The apparatus according to claim 10, wherein when acquiring the collected values of the various types of power data in the power supply circuit, the determining unit is configured to:

12. The apparatus as claimed in claim 10, wherein when said adjusting the phase shift degree based on the difference between the target acquisition value and the target demand value, the adjusting unit is further configured to:

13. The apparatus of claim 12, wherein after the respective controllable switches in the power supply loop are controlled based on the adjusted first and second control signal groups, the control unit is configured to:

14. The apparatus of claim 12, wherein after determining a down-regulation value for a control signal period based on the data difference value and a set scaling factor, the adjustment unit is further configured to:

15. The apparatus as claimed in claim 10, wherein when said adjusting the phase shift degree based on the difference between the target acquisition value and the target demand value, the adjusting unit is configured to:

16. The apparatus of any of claims 10-15, wherein the control unit is further to:

17. The apparatus of any of claims 10-15, wherein the control unit is further to:

18. The apparatus of any of claims 10-15, wherein after the respective control of the corresponding respective controllable switches in the power supply loop based on the adjusted first and second control signal groups, the control unit is further configured to:

19. An electronic device, comprising:

a memory for storing executable instructions;

a processor for reading and executing executable instructions stored in the memory to implement the steps of the method of any one of claims 1 to 9.

20. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 9.