CN113829907A

CN113829907A - Charging controller, application device thereof and charging control method

Info

Publication number: CN113829907A
Application number: CN202010507004.4A
Authority: CN
Inventors: 穆晓鹏; 徐威; 栗文涛; 王建文; 徐志勇; 王劲松; 施行达; 王保磊
Original assignee: Deri Energy Research Institute; Qingdao Teld New Energy Technology Co Ltd
Current assignee: Deri Energy Research Institute; Qingdao Teld New Energy Technology Co Ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-12-24

Abstract

The application provides a charging controller, an application device thereof and a charging control method. In this charge controller, the control unit acquires F characteristics self and one by the first communication signal who confirms the physical connection between the battery charging outfit, each power supply route that F corresponds received same direct current power supply electric energy opens in turn, thereby realize carrying out the purpose that direct current charges to a plurality of correspondences by the battery charging outfit in turn, and then the charge controller that this application provided can replace the mode that exchanges charging through the mode that direct current charges, realize carrying out the purpose that exports the restriction to the electric energy in the charging process, consequently, the security of charging process has been improved.

Description

Charging controller, application device thereof and charging control method

Technical Field

The present invention relates to the field of charging technologies, and in particular, to a charging controller, an application device thereof, and a charging control method.

Background

Generally, the electric vehicle is mainly used for commuting on duty and off duty, people usually select to charge the electric vehicle in a company parking lot or a community parking lot after off duty in order to guarantee the endurance of the electric vehicle, and the charging duration is usually different from 4 to 8 hours, so that the power supplementing requirement of the electric vehicle can be guaranteed by adopting slow charging of corresponding charging equipment.

Currently, the slow charging is mostly performed by an ac charging method, i.e., ac power of a power grid is directly provided to a plurality of electric vehicles, and a power battery in the electric vehicle is charged by an ON-Board Controller (OBC) of the electric vehicle.

However, during the charging process, the limitation of the electric energy output is realized by completely depending on the OBC of the electric vehicle, so that the realization of the limitation of the electric energy output during the charging process becomes a problem to be solved urgently.

Disclosure of Invention

In view of this, the present invention provides a charging controller, an application device thereof and a charging control method, in which a dc charging mode is used to replace an ac charging mode, so as to achieve the purpose of limiting the output of electric energy during the charging process, thereby improving the safety of the charging process.

In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:

the present application provides in a first aspect a charge controller comprising: the device comprises a control unit, at least one power multiplexing unit and a plurality of output port groups; wherein:

the power multiplexing unit comprises N power supply paths, wherein N is an integer greater than 1; the electric energy output ends of the output port groups respectively receive corresponding direct current power supply electric energy through the corresponding power supply paths; each power supply path and at least one of the other N-1 power supply paths in the power multiplexing unit receive the same direct current power supply energy;

the control unit is used for: and acquiring F first communication signals representing the confirmed physical connection relationship between the control unit and a charged device through the first communication end in each output port group, and controlling each power supply path receiving the same direct current power supply energy in the F corresponding power supply paths to be turned on in turn, wherein F is an integer greater than 1.

Optionally, all of the N power supply paths in the power multiplexing unit receive the same dc power supply.

Optionally, the method further includes: at least one power distribution unit PDU; n power supply paths in the power multiplexing unit receive electric energy output by the PDU output end, and the PDU input end receives at least two different direct current power supply electric energy.

Optionally, N power supply paths in the power multiplexing unit are divided into multiple groups of same input paths, and each group of same input paths includes at least two power supply paths for receiving the same dc power supply.

Optionally, the method further includes: at least two PDUs; each group of the same input paths in the power multiplexing unit receives electric energy output by the corresponding PDU output end, and the input end of each PDU receives at least two different direct current power supply electric energies.

Optionally, a power supply path includes: a first relay; wherein:

the normally open contact of the first relay is arranged between the input end and the output end of the power supply path; the first relay is controlled by the control unit.

Optionally, the power multiplexing unit further includes: a selection module; wherein:

n output ends of the selection module are correspondingly connected with control ends of N power supply paths one by one;

the selection module is used for alternately switching on each power supply path receiving the same direct current power supply energy in the F corresponding power supply paths under the control of the control unit.

Optionally, the method further includes: a master switch; wherein:

n power supply paths in the multiplexing power unit receive the same direct current power supply electric energy through the main switch; the main switch is controlled by the control unit.

Optionally, the control unit is further configured to obtain F second communication signals through a second communication end in each output port group;

the second communication signal is a transmission signal for communication between the control unit and the corresponding charged device.

Optionally, the method further includes: an auxiliary power supply connection unit; wherein:

the input of supplementary power supply coupling unit receives supplementary power supply electric energy, supplementary power supply coupling unit includes: a plurality of auxiliary power supply paths; each of the auxiliary power supply paths is connected between the input terminal of the auxiliary power supply connection unit and an auxiliary power supply terminal in a corresponding one of the output port groups;

the control unit is further in communication connection with each auxiliary power supply path, and is further configured to acquire F first communication signals and control F corresponding auxiliary power supply paths to be switched on.

A second aspect of the present application provides a charging control method applied to a control unit in a charging controller according to any one of the first aspects of the present application, the charging control method including:

judging whether F first communication signals are received or not;

if the F first communication signals are received, in a power multiplexing unit in the charging controller, controlling each power supply path receiving the same direct-current power supply energy in the F corresponding power supply paths to be turned on in turn until charging of each corresponding charged device is finished.

Optionally, the switching basis of turning on in turn is specifically:

in the F corresponding power supply paths, the time length of opening each power supply path for receiving the same direct current power supply reaches the time length threshold value of the power supply path, or when each power supply path for receiving the same direct current power supply power is opened, the electric quantity output by the power supply path reaches the electric quantity threshold value of the power supply path.

Optionally, in the F corresponding power supply paths, time thresholds of the power supply paths receiving the same dc power supply energy are the same, or electric quantity thresholds of the power supply paths receiving the same dc power supply energy are the same.

Optionally, in the F corresponding power supply paths, the time length threshold or the electric quantity threshold of each power supply path receiving the same dc power supply is sequentially determined according to the magnitude relationship of the SOC of each charged device corresponding to the power supply path, or is randomly determined.

Optionally, when any step is executed after the step of receiving F first communication signals, the method further includes:

detecting whether at least one corresponding charged device is charged;

and if the situation that at least one corresponding charged device is charged is detected, updating F, and updating the F corresponding power supply paths.

detecting whether at least one new said first communication signal is received;

and if detecting that at least one new first communication signal is received, updating F and updating the F corresponding power supply paths.

Optionally, determining the basis of the switching sequence in the alternate turning-on includes: any one of a preset sequence, a sequence of receiving the F first communication signals or a magnitude relation sequence of the F corresponding to the charged equipment SOC;

alternatively, the first and second electrodes may be,

receiving at least two of the sequence of the F first communication signals, the magnitude relation sequence of the F first communication signals corresponding to the SOC of the charged equipment or the sequence of the reserved charging;

alternatively, the first and second electrodes may be,

at least two of a preset sequence, a magnitude relation sequence of the F corresponding to the charged equipment SOC or a sequence of reserved charging.

Optionally, when it is determined that the basis for determining the switching sequence in the alternate activation includes at least two, the priority of the sequence of the reserved charging is the highest, the priorities of the F priorities corresponding to the magnitude relation sequence of the SOC of the charged device are the next, and the priorities of the sequence of the preset sequence and the sequence of the received F first communication signals are the lowest.

Optionally, the flag indicating that the charging of the charged device is finished includes:

receiving no corresponding first communication signal; alternatively, the first and second electrodes may be,

when the power supply path corresponding to the charged device is opened, the current flowing through the power supply path is equal to zero.

A third aspect of the present application provides a charging apparatus comprising: the system comprises at least one direct current charger and at least two charging terminals; wherein:

the direct current charger comprises a charging controller according to any one of the first aspect of the application;

in the direct current charger, each output port group of the charging controller establishes a physical connection relationship with the charged device through the corresponding charging terminal.

Optionally, the charging device is a direct current charging pile, the direct current charger is a body of the direct current charging pile, and the charging terminal is a charging gun of the direct current charging pile;

the machine body also comprises an ACDC module; the ACDC module is used for converting the received alternating current power supply electric energy into direct current power supply electric energy and providing the direct current power supply electric energy for the charging controller.

Optionally, the charging device is a group charging device, the direct current charger is a box transformer substation or a master control box, and the charging terminal includes a gun base and a gun body;

the number that the charging controller receives the direct current power supply electric energy is X in the case becomes or the master control box, still include in the case becomes or the master control box: a centralized control unit and X ACDC modules; x is a positive integer; wherein:

the centralized control unit is used for controlling each ACDC module to convert the received alternating current power supply electric energy into corresponding direct current power supply electric energy through the control unit in each charging controller, and the corresponding direct current power supply electric energy is provided for each power multiplexing unit.

The present application fourth aspect provides a charging station, comprising: a transformer, a power supply selection unit and at least one charging device according to any one of the third aspects of the present application;

the input end of the transformer is connected with an alternating current power grid; the output end of the transformer is connected with the input end of the power supply selection unit;

and each output end of the power supply selection unit provides alternating current power supply electric energy for the corresponding charging equipment.

Optionally, when the charging device is a group charging device, the transformer and the power supply selection unit are both arranged in the box transformer substation or the master control box.

As can be seen from the above technical solutions, the present invention provides a charge controller, which specifically includes: the device comprises a control unit, at least one power multiplexing unit and a plurality of output port groups. In this charge controller, the control unit acquires F characteristics self and a by the first communication signal who confirms the physical connection between the battery charging outfit, each power supply route that F corresponds received same direct current power supply electric energy opens in turn to the realization carries out the purpose that direct current charges to a plurality of correspondences by the battery charging outfit in turn, and then the charge controller that this application provided can replace the mode that exchanges charging through the mode that direct current charges, realizes carrying out the purpose that exports the restriction to the electric energy in the charging process, consequently, the security of charging process has been improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1-8 are schematic diagrams of 8 structures of a charge controller according to an embodiment of the present disclosure;

fig. 9 is a schematic flowchart of a charging control method according to an embodiment of the present application;

fig. 10 and fig. 11 are schematic specific flowcharts of two updating methods executed simultaneously with step S120 according to an embodiment of the present application;

fig. 12-14 are schematic structural diagrams of three charging devices provided in the embodiments of the present application;

fig. 15 is a schematic structural diagram of a charging station according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In this application, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

In order to achieve the purpose of limiting the output of electric energy during charging by using a dc charging mode instead of an ac charging mode, an embodiment of the present application provides a charging controller, which has a specific structure as shown in fig. 1, and includes: m power multiplexing units 100, one control unit 200, and P output port groups 300.

Wherein, M is a positive integer, P is an integer greater than 1, and the specific values of the two can be determined according to specific situations, which are not specifically limited herein and are all within the protection scope of the present application; in practical applications, M may have a value of 2 and P may have a value of 12. Fig. 1 shows only M ═ 1 as an example.

A power multiplexing unit 100, comprising: n power supply paths 110; in one power multiplexing unit 100, according to whether the connection relationships of the input ends of the power supply paths 110 are the same or not, the N power supply paths 110 are divided into at least one group of identical input paths, each group of identical input paths includes at least two power supply paths 110, for example, fig. 1 (only two power supply paths 110 are shown in the figure, and the rest of the power supply paths 110 are omitted from illustration) only shows that one group of identical input paths includes all the power supply paths 110; in each group of the same input paths, one end of each power supply path 110 receives the dc power supply from the same source, and the other end of each power supply path 110 is connected to the power output end of one corresponding output port group 300.

Wherein, N is an integer greater than 1, and the specific value thereof may be determined according to specific circumstances, and is not specifically limited herein, and is within the scope of the present application; in practical applications, the value of N may be 6, that is, one power multiplexing unit 100 may include 6 power supply paths 110.

It should be noted that, when the charging controller includes at least two power multiplexing units 100, the number of the power supply paths 110 included in each power multiplexing unit 100 itself may be equal or may not be equal, that is, in each power multiplexing unit 100, the values of N may be the same or may not be the same, which may be determined according to an actual application situation, and herein is not specifically limited, and all of the values are within the protection scope of the present application.

It should be further noted that, in one power multiplexing unit 100, the number of the same input paths included in the power multiplexing unit 100 and the number of the power supply paths 110 included in each group of the same input paths may be set according to practical situations, and are not specifically limited herein, and all within the protection scope of the present application, as long as each power supply path and at least one of the other N-1 power supply paths in the power multiplexing unit 100 are ensured to receive the same dc power supply.

The control unit 200 receives the auxiliary power supply through its own power supply terminals (e.g., the a + IN pin and the a-IN pin of the control unit 200 IN fig. 1) to maintain its normal operation; the control unit 200 has a first control terminal (e.g., a pin K1 on the control unit 200 in fig. 1) through which communication connection with all the power supply paths 110 in each power multiplexing unit 100 can be realized to control on or off of each power supply path 110; the control unit 200 has a third communication port (e.g., pin CC1-1 to pin CC1-P of the control unit 200 in fig. 1) through which a communication connection with the first communication port of each output port group 300 can be implemented to obtain a plurality of first communication signals; the control unit 200 also has a fourth communication port through which a communication connection with the second communication ports of the respective output port groups 300 can be achieved to acquire a plurality of second communication signals.

Wherein, each first communication signal represents that the control unit 200 confirms the physical connection relationship with one charged device 01; the second communication signal is a transmission signal for communication between the control unit 200 and the corresponding charged device 01, and the second communication signal includes performance parameters such as SOC of the power battery in the corresponding charged device 01.

It should be noted that the physical connection relationship may be a wireless connection relationship, for example, a connection relationship established by electromagnetic waves, that is, the charging controller may implement wireless charging; the charging controller may also be in a wired connection relationship, for example, a connection relationship established through a cable, that is, the charging controller may implement wired charging, which is not specifically limited herein, and may be determined according to specific situations, and all of which are within the protection scope of the present application.

It should be further noted that, the control unit 200 confirms a physical connection relationship with one charged device 01, and indicates that the charging controller also confirms a communication connection relationship and an electrical connection relationship with the charged device 01, that is, after receiving the first communication signal, the control unit 200 in the charging controller may acquire a corresponding second communication signal, and may output electric energy to the corresponding charged device 01.

Optionally, in practical application, the charged device 01 may be a new energy vehicle, or may be an electronic device such as a mobile phone and the like that can be charged, which are all within the protection scope of the present application, and the present application is not specifically limited herein, and may be selected according to a practical application scenario. When the charged device 01 is a new energy automobile, the current level of the charging controller is higher, and the charging controller can bear direct current with higher current level; when the charged device 01 is an electronic device capable of being charged, the charging controller has a low current level and can bear a low level of direct current.

In practical applications, referring to the national standard, the fourth communication terminal of the control unit 200 must include an electronic lock feedback terminal (e.g., SIGN + pin and SIGN-pin on the control unit 200 in fig. 1), a CAN communication terminal (e.g., S + pin and S-pin on the control unit 200 in fig. 1), and an electronic lock power supply terminal (e.g., EL + pin and EL-pin on the control unit 200 in fig. 1), and optionally includes a terminal communication terminal (e.g., 485A pin and 485B pin on the control unit 200 in fig. 1), that is, a communication terminal for devices such as an indicator light. For simplicity, the communication lines in fig. 1 represent the communication line set with eight pins, and the communication line set includes eight lines inside; fig. 2 to 8 and fig. 13 to 14 are further simplified, that is, only one connection of the eight pins is illustrated.

In normal operation of the charging controller, if the charging controller includes only one power multiplexing unit 100 and each power multiplexing unit 100 is divided into only one group of the same input paths, after the control unit 200 receives F first communication signals, the control unit controls F corresponding power supply paths 110 to be turned on in turn until the charging of the corresponding device 01 to be charged is finished.

Wherein, F is an integer greater than 1, and specific values can be determined according to specific situations, and are not specifically limited herein and are within the scope of the present application; in practical application, the value of F may be any value within (1, N).

For example, assuming that the control unit 200 in the charging controller receives two first communication signals from the first charged device and the second charged device respectively, and the two power supply paths 110 corresponding to the first charged device and the second charged device belong to the same group of the same input paths in the same power multiplexing unit 100, the control unit 200 first controls the power supply path 110 corresponding to the first charged device to be turned on and maintained for a time period t1, then controls the power supply path 110 corresponding to the second charged device to be turned on and maintained for a time period t2, and then repeats the above steps until the first charged device and the second charged device are charged.

If the charging controller includes M power multiplexing units 100, and each power multiplexing unit 100 is divided into at least two groups of same input paths, after the control unit 200 receives F first communication signals, it determines which group of same input paths the F corresponding power supply paths 110 belong to, and then controls the corresponding power supply paths 110 belonging to the same group of same input paths to turn on in turn until the charging of the corresponding charged device 01 is finished.

For example, assuming that the control unit 200 in the charging controller receives four first communication signals from the first charged device, the second charged device, the third charged device and the fourth charged device respectively, and the two power supply paths 110 corresponding to the first charged device and the second charged device belong to the same group of same input paths, and the two power supply paths 110 corresponding to the third charged device and the fourth charged device belong to the same group of same input paths, the control unit 200 controls the power supply path 110 corresponding to the first charged device to be turned on and maintained for a time period t1, then controls the power supply path 110 corresponding to the second charged device to be turned on and maintained for a time period t2, and then repeats the above steps until the first charged device and the second charged device are charged; meanwhile, the control unit 200 first controls the power supply path 110 corresponding to the third device to be charged to be on and maintained for a time period t3, then controls the power supply path 110 corresponding to the fourth device to be charged to be on and maintained for a time period t4, and then repeats the above steps until the third device to be charged and the fourth device to be charged are charged.

It should be noted that, in practical applications, in the same group of input paths, there is an interval duration from the time when one corresponding power supply path 110 is controlled to be turned off to the time when the next corresponding power supply path 110 is controlled to be turned on, where the interval duration is the switching time when switching is performed in turn; however, this time interval is typically required to be less than 10 s; the time interval for the alternate switching is negligible with respect to the time period for which each power supply path 110 is turned on.

In practical application, when F first communication terminals receiving the first communication signal respectively correspond to F power supply paths 110 receiving different dc power supply energies, that is, when a certain group of input paths only includes one corresponding power supply path 110, each corresponding power supply path 110 belonging to the same group of input paths is controlled to be turned on in turn, which can be simplified as follows: the corresponding power supply path 110 in the set of the same input path is controlled to be always on. For example, assuming that the control unit 200 in the charging controller receives two first communication signals from a first charged device and a second charged device respectively, and two power supply paths 110 corresponding to the first charged device and the second charged device belong to two power multiplexing units 100 respectively, or two groups of same input paths belonging to the same power multiplexing unit 100 respectively, the control unit 200 controls the power supply path 110 corresponding to the first charged device to be always on until the charging of the first charged device is finished; and controlling the power supply path 110 corresponding to the second charged device to be always opened until the second charged device is charged. When the control unit 200 receives only one first communication signal, the control unit 200 may control the corresponding power supply path 110 to be always turned on until the charging of the corresponding device 01 to be charged is finished. Only when there are at least two power supply paths 110 receiving different dc power supply energies in the F power supply paths 110 respectively corresponding to the F first communication terminals receiving the first communication signal, the control unit 200 controls each power supply path 110 receiving the same dc power supply energy in the F corresponding power supply paths 110 to turn on in turn.

According to the technical scheme, after the control unit 200 in the charging controller acquires the first communication signal for confirming the physical connection relationship between the F representations and the charged device 01, the control unit controls the F corresponding power supply paths 110 to receive the power supply paths 110 of the same direct current power supply energy to be turned on in turn, so that the purpose of performing direct current charging on a plurality of corresponding charged devices 01 in turn is achieved, and then the charging controller provided by the application can replace the alternating current charging mode through the direct current charging mode to achieve the purpose of performing output limitation on the electric energy in the charging process, and therefore the safety of the charging process is improved.

In practical applications, one embodiment of the power supply path 110 in the same input path receiving the same dc power supply is shown in fig. 1, specifically: when the N power supply paths 110 in one power multiplexing unit 100 are divided into only one group of same input paths, the input ends of the N power supply paths 110 are all connected to the input end of the power multiplexing unit 100; when the N power supply paths 110 in one power multiplexing unit 100 are divided into multiple sets of common input paths, the input terminals of all the power supply paths 110 in each set of common input paths are connected to a corresponding input terminal of the power multiplexing unit 100.

Optionally, the power of the dc power supply received by each input terminal of the power multiplexing unit 100 may be adjusted correspondingly through the control unit 200, or may be fixed, and is not specifically limited herein, and may be determined according to specific situations, which are within the protection scope of the present application.

Although the power of the dc power received by each input terminal of the power multiplexing unit 100 is adjustable, one set of the same input paths can still only use the dc power corresponding to itself, and cannot use other dc power received by the power multiplexing unit 100, so there is still a case that the number of the charged devices 01 charged through one set of the same input paths is small, such as only 1, and the number of the charged devices 01 charged through the other set of the same input paths is large, such as 4, so that the former is likely to finish charging before the latter, and therefore a part of the idle power is not reasonably utilized, and in order to improve that the charging controller cannot reasonably utilize each of the dc power received by itself, the implementation mode that the power supply path 110 in the same input path receives the same dc power is improved, this will be explained in detail below.

When the N power supply paths 110 in one power multiplexing unit 100 are only divided into a group of same input paths, an embodiment in which all the power supply paths 110 in the same input paths receive the same dc power supply is shown in fig. 2, specifically: the input terminals of the N Power supply paths 110 are all connected to the output terminal of a PDU (Power distribution unit) 400, and the input terminals of the PDU 400 are respectively connected to at least two input terminals of the Power multiplexing unit 100, and the PDU 400 can call the corresponding amount of dc Power supply received by itself to output to the N Power supply paths 110 under the control of the control unit 200.

When the N power supply paths 110 in one power multiplexing unit 100 are divided into multiple groups of same input paths, the embodiment in which all the power supply paths 110 in the same input paths receive the same dc power supply is as follows: the input terminals of all the power supply paths 110 in each group of input paths are connected to the output terminal of a PDU 400, the input terminals of the PDU 400 are respectively connected to at least two input terminals of the power multiplexing unit 100, and the PDU 400 can call the corresponding amount of received dc power supply energy to output from its output terminal under the control of the control unit 200.

The above is only one improvement manner of the embodiment in which each power supply path 110 in each group of the same input path receives the same dc power supply, and other improvement manners with the same effect are also within the protection scope of the present application, and are not described herein any more, which may be determined according to the actual application situation.

It should be noted that, after the above improvement mode is adopted, the charging controller can make full use of each received dc power supply electric energy, and avoid the situation that the dc power supply electric energy is idle, so that the charging speed and the charging efficiency of the charging controller are improved.

In another embodiment, the first aspect of the present application provides an embodiment of the power supply path 110, which has a specific structure as shown in fig. 3, and includes: a first relay 111.

A first normally open contact of the first relay 111 is arranged between the positive electrode of the input end and the positive electrode of the output end of the power supply path 110, and a second normally open contact of the first relay 111 is arranged between the negative electrode of the input end and the negative electrode of the output end of the power supply path 110; the coil of the first relay 111 has one end grounded and the other end serving as a control end of the power supply path 110, and is connected to a first control end of the control unit 200.

When the control end of the power supply path 110 receives the control signal output by the control unit 200, the coil of the first relay 111 is energized to generate magnetism, and the first normally open contact and the second normally open contact of the first relay are closed, so that the positive electrode of the input end and the positive electrode of the output end of the corresponding power supply path 110 are communicated, the negative electrode of the input end and the negative electrode of the output end of the corresponding power supply path 110 are communicated, and further the corresponding power supply path 110 is switched on.

Optionally, to avoid the influence caused by the current reversal, a diode Z is further disposed in the power supply path 110, an anode of the diode Z is connected to the positive electrode of the input end of the power supply path 110, and a cathode of the diode Z is connected to one end of the first normally open contact of the first relay 111, which is close to the positive electrode of the input end of the power supply path 110.

It should be noted that the above is only one embodiment of the power supply path 110, and in practical applications, the power supply path 110 includes but is not limited to the above embodiment, which may be determined according to a specific application scenario and is not limited herein.

A second aspect of this embodiment provides another specific implementation manner of the power multiplexing unit 100, and a specific structure thereof is as shown in fig. 4, and on the basis of fig. 3, the second implementation manner further includes: a selection module 120.

N output terminals of the selection module 120 are respectively connected to control terminals of the N power supply paths 110, and a control terminal of the selection module 120 is connected to the first control terminal of the power multiplexing unit 100.

After receiving the instruction issued by the control unit 200 through the pin K1, the selection module 120 outputs a control signal to the control end of each corresponding power supply path 110 in turn according to the instruction, so as to control each corresponding power supply path 110 to turn on in turn.

It should be noted that the selection module 120 generally includes components that can achieve electrical isolation, so the power multiplexing unit 100 employing this embodiment can achieve electrical isolation.

When the N power supply paths 110 in one power multiplexing unit 100 are only divided into a set of same input paths, that is, the N power supply paths 110 receive the same dc power supply, the third aspect of this embodiment provides another specific implementation of the power multiplexing unit 100, and the specific structure of the specific implementation is as shown in fig. 5, and on the basis of that shown in fig. 4, the third aspect further includes: a master switch 130.

The input terminals of the N power supply paths 110 are all connected to the output terminal of the main switch 130, the input terminal of the main switch 130 receives the same dc power supply, and the control terminal of the main switch 130 is connected to the second control terminal of the control unit 200 (for example, the pin K2 on the control unit 200 in fig. 5).

When the main switch 130 receives the on signal, it is in an on state, so that the dc power can be transmitted to the N power supply paths 110; when the control terminal of the main switch 130 receives the off signal, it turns itself off, so that the dc power cannot be transmitted to the N power supply paths 110.

The above is only one embodiment of the power multiplexing unit 100, and in practical applications, the power multiplexing unit 100 includes but is not limited to the above embodiment, which may be determined according to a specific application scenario and is not limited herein.

The third aspect of this embodiment also provides a specific implementation manner of the main switch 130, and a specific structure thereof is as shown in fig. 6, and includes: a second relay or contactor 131.

A normally open contact of the second relay or contactor 131 is arranged between the positive electrode of the input end and the positive electrode of the output end of the main switch 130, and the negative electrode of the input end of the main switch 130 is directly connected with the negative electrode of the output end of the main switch; one end of the coil in the second relay or contactor 131 is grounded, and the other end of the coil in the second relay or contactor 131 is connected to the second control end of the control unit 200 as the control end of the main switch 130.

Optionally, the main switch 130 further includes: a switching tube Q, as shown in fig. 6; the switch Q is connected in parallel to two ends of the normally open contact of the second relay or contactor 131 in the same direction, and the control end of the switch Q is connected to another pin (not shown) in the second control end of the control unit 200.

In practical application, in a normal state, the normally open contact in the second relay or contactor 131 is closed and separated, so that the on and off of the main switch 130 are realized; and the switching-on of the switching tube Q reduces the system loss while ensuring the system cut-off capability.

Similarly, another switch tube Q and a normally open contact of another second relay or contactor 131 may be simultaneously connected in parallel between the negative electrode of the input end and the negative electrode of the output end of the main switch 130; however, it should be noted that a switch Q and a normally open contact of the second relay or contactor 131 cannot be arranged in parallel between the negative terminal of the input terminal and the negative terminal of the output terminal of the main switch 130, because if the normally open contact is arranged, the normally open contact on the positive branch in the power supply path 110 is always subjected to voltage stress during the operation of the charging controller, thereby affecting the safety of the charging controller.

Optionally, the switching tube Q may be an MOS transistor or an IGBT, and is not specifically limited herein, and may be determined according to specific situations, and all of which are within the protection scope of the present application.

It should be noted that, the above are only two embodiments of the main switch 130, and in practical applications, the main switch 130 includes but is not limited to the above embodiments, which may be determined according to specific situations.

In practical applications, after the control unit 200 confirms the communication connection relationship with the corresponding charged device 01, the second communication signal corresponding to the charged device 01 can be acquired only on the basis that there is power supply to the BMS in the corresponding charged device 01.

The power supply mode of the BMS in the charged device 01 may be: the charged device 01 itself supplies power to the BMS itself, and may also be: the charging controller provided in the above embodiment supplies power to the BMS in the charged device 01, and the two power supply manners may be determined according to specific situations, and are not specifically limited herein and are within the protection scope of the present application.

In order to implement the second power supply mode, another embodiment of the present application provides another implementation of the charge controller, a specific structure of which is shown in fig. 7, and the implementation further includes, on the basis of the charge controller shown in fig. 6: the auxiliary power supply connection unit 500.

The input end of the auxiliary power supply connection unit 500 is connected with the power end of the charge controller, and receives auxiliary power supply electric energy to maintain the normal operation of the auxiliary power supply connection unit; also, the auxiliary power supply connection unit 500 includes: p auxiliary power supply paths 510, wherein an input terminal of each auxiliary power supply path 510 is connected to an input terminal of the auxiliary power supply connection unit 500, an output terminal of each auxiliary power supply path 510 is connected to an auxiliary power supply terminal of a corresponding output port group 300, and a control terminal of each auxiliary power supply path 510 is connected to an auxiliary control terminal of the control unit 200 (e.g., AUX-1 to AUX-P on the control unit 200 in fig. 7).

After the control unit 200 acquires the F first communication signals, it also outputs control signals to the F corresponding auxiliary power supply paths 510, and controls the F corresponding auxiliary power supply paths 510 to be turned on to supply power to the BMS in the corresponding charged device 01.

It should be noted that, the charging controller provided in this embodiment implements the purpose of supplying power to the corresponding charged device 01 by controlling the corresponding auxiliary power supply path 510 to be turned on, thereby implementing the purpose of acquiring the second communication signal corresponding to the charged device 01, and further implementing the monitoring of the charging process of the corresponding charged device 01, so as to also implement the purposes of reducing the potential safety hazard of the charging controller and improving the charging safety of the charging controller.

The present embodiment further provides a specific implementation manner of the auxiliary power supply path 510, as shown in fig. 8, the specific structure includes: a third relay 511.

The normally open contacts of the third relays 511 are provided between the input terminal and the output terminal of the auxiliary power supply path 510, and one end of the coil of each third relay 511 is grounded and the other end serves as a control terminal of the auxiliary power supply path 510.

When the control end of the auxiliary power supply path 510 receives the control signal output by the control unit 200, the coil of the third relay 511 is energized to generate magnetism, and the normally open contact of the third relay is closed, so that the output ends of the input ends of the third relay are communicated, and the auxiliary power supply path 510 is opened.

It should be noted that the above is only an example of the embodiment of the auxiliary power supply path 510 provided in the present application, and in practical applications, the auxiliary power supply path 510 includes but is not limited to the above embodiment, which may be determined according to a specific application scenario and is not limited herein.

As can be seen from the foregoing embodiments, the charging controller may alternately charge the corresponding devices to be charged under the control of its own control unit, and how the control unit implements the charging control of each part in the charging controller, the charging control method is specifically shown in fig. 9, and includes the following steps:

s110, judging whether F first communication signals are received or not.

If F first communication signals are received, performing step S120; if F first communication signals are not received, the process returns to step S110.

It should be noted that, as can be seen from the foregoing embodiments, the physical connection relationship between the first communication signal representation control unit and the charged device is confirmed, where specific contents of the physical connection relationship have been described in detail in the foregoing embodiments, and reference may be made to the foregoing embodiments, and details are not described here again.

And S120, in a power multiplexing unit in the charging controller, controlling each power supply path receiving the same direct current power supply energy in the F corresponding power supply paths to be turned on in turn until the charging of each corresponding charged device is finished.

The flag indicating that the charging of the charged device is finished may be: the absence of receipt of the corresponding first communication signal, e.g., indicating that the first charged device is finished charging when the absence of receipt of the first communication signal from the first charged device; the reason why the corresponding first communication signal is not received is two possibilities, one is that the physical connection relationship between the charged device and the charging controller is actively disconnected for the user, and the other is that the physical connection relationship between the charged device and the charging controller is disconnected due to the occurrence of an accident.

The sign of the end of charging of the charged device may also be: when a power supply path corresponding to the charged equipment is switched on, the current flowing through the power supply path is equal to zero; the reasons for this phenomenon are: when a certain charged device is fully charged, the BMS of the BMS automatically disconnects the electrical connection between the BMS and the charging controller, that is, the charging controller and the charged device are in an open circuit state.

After the control unit acquires the second communication signal corresponding to the charged device, it may also determine whether the charged device is charged through the second communication signal, specifically, through performance parameters, such as SOC, of the power battery in the charged device, included in the second communication signal.

In practical applications, the indication of the end of charging of the charged device includes, but is not limited to, the two examples, which may be selected according to a specific application environment, and is not limited herein.

It should be noted that, during the process of alternately turning on each corresponding power supply path, there is an alternate switching time interval, but the alternate switching time interval has been described in detail in the foregoing embodiment, and is not described herein again, and reference may be made to the foregoing embodiment.

As can be seen from the foregoing embodiment, the control unit, using the above charging control method, may control each power supply path that receives the same dc power supply energy from among the F corresponding power supply paths to turn on in turn, so as to achieve the purpose of charging the corresponding charged device in turn, but in the turn-on process, the control unit performs switching of the power supply path that is turned on, where the specific switching basis may be: in the F corresponding power supply paths, the time length of the power supply paths belonging to the same group of the same input path is up to the time length threshold value of the power supply paths; alternatively, the switching criterion may be: and in the F corresponding power supply paths, the electric quantity output by the power supply paths reaches the electric quantity threshold value of the power supply paths when the power supply paths belonging to the same group and the same input path are switched on.

In practical applications, the switching criteria in alternate activation include, but are not limited to, the two examples described above, which may be determined according to practical application situations, and are not specifically limited herein, and are all within the protection scope of the present application.

In the above two switching bases, it may be: in the F corresponding power supply paths, time length thresholds of the power supply paths belonging to the same group of the same input path are all equal, or in the F corresponding power supply paths, electric quantity thresholds of the power supply paths belonging to the same group of the same input path are all equal, which may also be: in the F corresponding power supply paths, the time length threshold or the electric quantity threshold of each power supply path belonging to the same group of the same input path is determined sequentially according to the SOC size relationship with the respective corresponding charged device, or is determined randomly.

For example, assume that the control unit receives first communication signals from three charged devices and that the three charged devices belong to the same group of the same input path, and assume that the SOC magnitude relationship order of the three charged devices is: when the third charged device is minimum, the second charged device is next to the first charged device is maximum, the time length threshold of the power supply path corresponding to the third charged device is T1, the time length threshold of the power supply path corresponding to the second charged device is T2, the time length threshold of the power supply path corresponding to the first charged device is T3, and T1> T2> T3; a determination manner similar to this time length threshold is the first determination manner in the latter case.

For another example, assuming that the control unit receives the first communication signals from the three charged devices and that the three charged devices belong to the same group of input paths, the time length threshold of the power supply path corresponding to the second charged device is T1, the time length threshold of the power supply path corresponding to the first charged device is T2, the time length threshold of the power supply path corresponding to the third charged device is T3, and T1> T2> T3; a determination manner like this that determines the respective time length thresholds without any order or rule is the second determination manner in the latter case.

It should be noted that, the electric quantity threshold is the same as the duration threshold, and reference may be made to the above detailed description of the determination manner of the duration threshold, which is not described herein again.

In practical applications, the time length threshold or the power threshold of each power supply path includes, but is not limited to, the two determination manners, which may be determined according to specific situations, and is not specifically limited herein, and is within the protection scope of the present application.

In the alternate switching-on process, the control unit determines a switching sequence in the alternate switching-on process according to the following specific criteria: any one of a preset sequence, a sequence of receiving the F first communication signals or a magnitude relation sequence of the F corresponding charged equipment SOC; the following steps can be also included: at least two of the sequence of receiving the F first communication signals, the magnitude relation sequence of the F corresponding charged devices SOC, or the sequence of the scheduled charging may be: at least two of a preset sequence, a magnitude relation sequence of the F corresponding charged equipment SOC or a sequence of reserved charging.

It should be noted that, when the basis for determining the switching sequence in alternate activation includes at least two, the priority of the sequence of the reserved charging is the highest, the priority of the magnitude relation sequence of the F corresponding charged devices SOC is the next, and the priority of the sequence of the preset sequence and the sequence of receiving the F first communication signals is the lowest.

For example, assume that the control unit receives the first communication signals of four charged devices and that four power supply paths corresponding to the four charged devices belong to the same group of the same input paths, and assume that the first charged device reserves charging prior to the second charged device and that the preset order of the four power supply paths corresponding to the four charged devices is: the first power supply path corresponding to the third charged device is opened, the second power supply path corresponding to the fourth charged device is opened, the third power supply path corresponding to the first charged device is opened, and the fourth power supply path corresponding to the second charged device is opened, so that the switching sequence determined according to the order of the reserved charging and the magnitude relation sequence of the SOC of the F corresponding charged devices is as follows: the first device to be charged, the second device to be charged, the third device to be charged, and the fourth device to be charged.

In practical applications, the switching order determination method includes, but is not limited to, the three embodiments described above, which may be determined according to specific situations, and is not specifically limited herein, and is within the scope of the present application.

In the working process of the charging controller, after charging of a certain charged device is finished, if the control unit continues to alternately turn on the original power supply path according to the original switching basis and the original switching sequence, a blank time period exists in each cycle, and in the blank time period, the charging controller does not charge any charged device, so that electric energy is wasted, and the charging efficiency of the charging controller is reduced, for this reason, any step is executed after the step of receiving F first communication signals, and the charging control method further includes the steps shown in fig. 10, where the steps shown in fig. 10 are specifically:

s210, detecting whether at least one corresponding charged device is charged and finished.

If it is detected that there is at least one corresponding charged device that is charged to end, executing step S220; if the charging of the corresponding device to be charged is not completed, the process returns to step S210.

And S220, updating F, and updating F corresponding power supply paths.

In the working process of the charging controller, after the control unit receives the first communication signal of at least one new device to be charged, if the control unit continues to alternately turn on the original power supply path according to the original switching basis and the original switching sequence, the charging controller does not charge the new device to be charged, and for this reason, any step is executed after the step of receiving F first communication signals, and the charging control method further includes the steps shown in fig. 11, where the steps shown in fig. 11 are specifically:

s310, detecting whether at least one new first communication signal is received.

If detecting that at least one new first communication signal is received, executing step S320; if it is not detected that a new first communication signal is received, the process returns to step S310.

And S320, updating the F, and updating the F corresponding power supply paths.

It should be noted that, step S220 and step S320 may be executed immediately after the respective previous step is executed, or may be executed after waiting for any time period after the respective previous step is executed, which is not specifically limited herein and is within the protection scope of the present application depending on the actual situation.

Another embodiment of the present application provides a charging device, a specific structure of which is shown in fig. 12 (only one dc charger is shown in the figure as an example), including: at least one direct current charger 20 and at least two charging terminals 10.

Each of the dc chargers 20 includes the charging controllers provided in the above embodiments, and each output port group 300 of each charging controller establishes a physical connection relationship with the charged device 01 through the corresponding charging terminal 10.

Optionally, the charging device may be a dc charging pile or a group charging device, which is not specifically limited herein and is within the protection scope of the present application according to specific situations.

When the charging equipment is a direct-current charging pile, the direct-current charging pile only comprises a direct-current charger 20 and two charging terminals 10, the direct-current charger 20 is a body of the direct-current charging pile, and the charging terminals 10 are charging guns of the direct-current charging pile; wherein, the concrete structure of direct current fills electric pile's organism is shown in fig. 13, includes: a charge controller and an ACDC module 30.

The charge controller comprises a control unit 200, a power multiplexing unit 100 and two output port groups 300; and the power multiplexing unit 100 includes two power supply paths 110, both receiving the same dc power supply; the communication terminal of the ACDC module 30 is connected to a fifth communication terminal (e.g., a CANH pin and a CANL pin on the control unit 200 in fig. 13) of the control unit 200, and is configured to convert the received ac power supply into dc power supply to be provided to the charging controller.

In practical application, as shown in fig. 13, the body of the dc charging pile further includes: the system comprises a switching power supply 40, a tripping unit 50, a status indicator lamp 60, a door opening power-off switch S1, an emergency stop switch S2 and a fan M.

The switching power supply 40 is configured to convert the received ac power into the auxiliary power, and output the auxiliary power to the power terminals (for example, the a + IN pin and the a-IN pin of the control unit 200 IN fig. 13) of the control unit 200 IN the charge controller, and when the charge controller includes the auxiliary power connection unit 500, the auxiliary power connection unit 500 is also provided.

The control terminal of the trip unit 50 is connected to a signal output terminal (shown as T on the control unit 200 in fig. 13) of the control unit 200, and is configured to prohibit the ACDC module 30 and the switching power supply 40 from receiving ac power supply under the control of the control unit 200 when an emergency power accident occurs, and disconnect the connection between the dc charger 20 and the external power supply, so as to improve the charging safety of the dc charger 20.

The power terminal of the status indicator lamp 60 is connected to the power supply terminal of the control unit 200 (e.g., the 5V pin of the control unit 200 in fig. 13); the state indicator lamp 60 is turned on to indicate that the direct current charger 20 is working, and the state indicator lamp 60 is turned off to indicate that the direct current charger 20 is not working.

In practical applications, the status indicator lamp 60 may be provided in a plurality of numbers, and the specific number is not limited herein and is within the protection scope of the present application according to specific situations; in addition, if the status indicator light 60 is a color adjustable indicator light, the three color adjusting ends of the status indicator light 60 need to be connected to the corresponding color adjusting control end (e.g., R, G, B pin on the control unit 200 in fig. 13) of the control unit 200.

Two ends of the door opening power-off switch S1 are connected to the first door opening detection end and the second door opening detection end of the control unit 200, two ends of the emergency stop switch S2 are connected to the first emergency stop feedback end and the second emergency stop feedback end of the control unit 200, respectively, or one end of the door opening power-off switch S1 is connected to the door opening detection end of the control unit 200 (e.g., pin L1 on the control unit 200 in fig. 13), one end of the emergency stop switch S2 is connected to the emergency stop feedback end of the control unit 200 (e.g., pin L2 on the control unit 200 in fig. 13), and the other end of the door opening power-off switch S1 and the other end of the emergency stop switch S2 are connected to a common end of the control unit 200 (e.g., pin L3V on the control unit 200 in fig. 13).

It should be noted that the door opening power-off switch S1 is added to the dc charger 20 only when the charging controller is applied to the field of charging new energy vehicles, and is used to enable the dc charger 20 to temporarily stop charging the new energy vehicle when a vehicle owner opens a vehicle door, thereby improving the charging safety of the new energy vehicle; the emergency stop switch S2 is used to disconnect the dc charger 20 from the power supply when the charging person actively touches the emergency stop switch.

The power end of the fan M receives auxiliary power supply electric energy; the control end of the fan M is connected to the control output end (for example, FG pin on the control unit 200 in fig. 13) of the fan M of the control unit 200, and the speed regulation end is connected to the PWM signal output end (for example, PWM pin on the control unit 200 in fig. 13) of the control unit 200; the fan M is configured to start to work under the control of the control unit 200 when the dc charger 20 is in a working state for a long time.

In practical applications, the control unit 200 may control the rotation speed of the fan M by outputting different PWM signals; moreover, when a fan M with a relatively high power is required, the fan M may also be composed of a plurality of fans M with a relatively low power, which is not specifically limited herein and is determined according to specific situations, and is within the protection scope of the present application.

When the charging device is a group charging device, the group charging device comprises at least one direct current charger 20 and at least two charging terminals 10; moreover, the direct current charger 20 is a box transformer substation or a master control box, and the charging terminal 10 comprises a gun base and a gun body; the specific structure of the box transformer substation or the master control box is shown in fig. 14 (only X ═ 1 is taken as an example), and includes: one charge controller, one centralized control unit 70, X ACDC modules 30.

X is a positive integer, and specific values thereof can be set according to specific needs, and are not specifically limited herein and are within the scope of the present application.

The communication terminal of each ACDC module 30 is connected to a fifth communication terminal (e.g., a CANH pin and a CANL pin on the control unit 200 in fig. 14) of the control unit 200, and is configured to convert the received ac power supply into corresponding dc power supply, and provide the corresponding dc power supply to the respective input terminals of the respective power multiplexing units 100.

The first communication terminal of the centralized control unit 70 is communicatively connected with a sixth communication terminal (e.g., a network port on the control unit 200 in fig. 14) of the control unit 200 in the charging controller.

It should be noted that, in practical applications, the group charging device generally includes only one dc charger 20, that is, the group charging device generally includes only one box transformer or the master control box.

In practical application, the box transformer substation or the master control box further comprises: further comprising: the system comprises a switching power supply 40, a tripping unit 50, a status indicator lamp 60, a door opening power-off switch S1, an emergency stop switch S2 and a fan M; however, the connection relationship of these devices is the same as that shown in fig. 13, and will not be described again here.

Another embodiment of the present application further provides a charging station, the specific structure of which is shown in fig. 15 (only the connection relationship between the transformer, the power supply selection unit, and each charging device 02 is schematically shown in the drawing), including: a transformer 90, a power supply selection unit 80 and at least one charging device 02 provided by the above embodiments.

The input of the transformer 90 is connected to the ac grid; the output end of the transformer 90 is connected with the input end of the power supply selection unit 80; the respective output terminals of the power supply selection unit 80 respectively provide ac power supply for the corresponding charging device 02.

It should be noted that, when the charging device 02 is a group charging device, the transformer 90 and the power supply selection unit 80 may be disposed in a certain box transformer or a general control box; in addition, the connection relationship between the transformer 90, the power supply selection unit 80 and the centralized control unit 70 in each box transformer substation or the master control box, and the specific structures of the transformer 90, the power supply selection unit 80 and the centralized control unit 70 in each box transformer substation or the master control box are the prior art, and are not described herein again.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. A charge controller, comprising: the device comprises a control unit, at least one power multiplexing unit and a plurality of output port groups; wherein:

2. The charge controller according to claim 1, wherein the N power supply paths in the power multiplexing unit all receive the same dc power supply.

3. The charge controller of claim 2, further comprising: at least one power distribution unit PDU; n power supply paths in the power multiplexing unit receive electric energy output by the PDU output end, and the PDU input end receives at least two different direct current power supply electric energy.

4. The charge controller according to claim 1, wherein the N power supply paths in the power multiplexing unit are divided into multiple groups of same input paths, each group of same input paths includes at least two power supply paths, and each group of same input paths receives the same dc power supply.

5. The charge controller of claim 4, further comprising: at least two PDUs; each group of the same input paths in the power multiplexing unit receives electric energy output by the corresponding PDU output end, and the input end of each PDU receives at least two different direct current power supply electric energies.

6. The charge controller of any of claims 1-5, wherein one of said supply paths comprises: a first relay; wherein:

7. The charge controller according to any one of claims 1 to 5, wherein the power multiplexing unit further includes: a selection module; wherein:

8. The charge controller according to claim 2 or 3, characterized by further comprising: a master switch; wherein:

9. The charging controller according to any one of claims 1 to 5, wherein the control unit is further configured to obtain F second communication signals through the second communication terminal in each of the output port groups;

10. The charge controller of claim 9, further comprising: an auxiliary power supply connection unit; wherein:

11. A charging control method applied to a control unit in the charging controller according to any one of claims 1 to 10, the charging control method comprising:

judging whether F first communication signals are received or not;

12. The charge control method according to claim 11, wherein the switching criteria for turning on in turn are specifically:

13. The charge control method according to claim 12, wherein, of the F corresponding power supply paths, the time threshold values of the respective power supply paths receiving the same dc power supply are the same, or the power threshold values of the respective power supply paths receiving the same dc power supply are the same.

14. The charge control method according to claim 12, wherein, in the F corresponding power supply paths, the respective power supply path time length thresholds or the respective power amount thresholds that receive the same dc power supply are sequentially determined according to a magnitude relationship of the SOC of the respective charged devices corresponding to the respective power supply paths, or are randomly determined.

15. The charge control method according to claim 11, wherein, while any step is performed after the step of receiving F first communication signals, further comprising:

detecting whether at least one corresponding charged device is charged;

16. The charge control method according to claim 11, wherein, while any step is performed after the step of receiving F first communication signals, further comprising:

detecting whether at least one new said first communication signal is received;

17. The charge control method of claim 11, wherein determining the basis for the switching sequence in turn-on comprises: any one of a preset sequence, a sequence of receiving the F first communication signals or a magnitude relation sequence of the F corresponding to the charged equipment SOC;

alternatively, the first and second electrodes may be,

18. The charging control method according to claim 17, wherein when it is determined that the basis for determining the switching order in the alternate activation includes at least two, the priority of the order of the reserved charging is highest, the priorities of F orders corresponding to a magnitude relationship order of the SOC of the device to be charged are next, and the priorities of the preset order and the order of receiving F first communication signals are lowest.

19. The charging control method according to any one of claims 11 to 18, wherein the flag indicating that the device to be charged is charged includes:

20. A charging device, comprising: the system comprises at least one direct current charger and at least two charging terminals; wherein:

the direct current charger comprises a charging controller according to any one of claims 1 to 10;

21. The charging device according to claim 20, wherein the charging device is a dc charging post, the dc charger is a body of the dc charging post, and the charging terminal is a charging gun of the dc charging post;

22. The charging equipment according to claim 20, wherein the charging equipment is a group charging equipment, the direct current charger is a box transformer substation or a master control box, and the charging terminal comprises a gun base and a gun body;

23. A charging station, comprising: a transformer, a power supply selection unit and at least one charging device according to any one of claims 20-22;

24. The charging station according to claim 23, wherein when the charging device is a group charging device, the transformer and the power supply selection unit are both disposed in the box transformer or a general control box.