A power borrowing method and apparatus

Abstract

The application discloses a power borrowing method and device, which are applied to a controller carried by a charging device, the charging device comprising a plurality of output terminals for outputting charging power; the method comprises the following steps: receiving a power borrowing request periodically sent by a power supply controller (PMU) carried by each output terminal of the plurality of output terminals; determining a target output terminal as a borrower from the plurality of output terminals based on a to-be-borrowed power value in the power borrowing request sent by each output terminal; determining a supply output terminal as a borrower from other output terminals based on the to-be-borrowed power value corresponding to the target output terminal and a borrowable power value corresponding to each output terminal except the target output terminal, and generating borrowing information corresponding to the supply output terminal; and sending the borrowing information to the supply output terminal respectively, so that the supply output terminal outputs borrowed power to the target output terminal according to the borrowing information.

Description

TECHNICAL FIELD

[0001] One or more embodiments of the present specification relate to the technical field of charging, and in particular to a power borrowing method and device. BACKGROUND

[0002] In recent years, with the development of the electric vehicle industry, the construction of the charging network matching the electric vehicle has also shown a relatively large growth. At present, the charging equipment commonly used to provide charging services for electric vehicles includes three types: portable charging box, alternating current charging pile and direct current charging pile. SUMMARY

[0003] The present application provides a power borrowing method and device, and the technical solutions are as follows:

[0004] According to a first aspect of the present application, a power borrowing method is provided, applied to a controller carried by a charging device, wherein the charging device includes a plurality of output terminals for outputting charging power; wherein the controller is used for power borrowing management for the plurality of output terminals; the plurality of output terminals are respectively carried with power supply controllers PMU; the method comprises:

[0005] receiving the power borrowing request periodically sent by the power supply controller PMU carried by each output terminal in the plurality of output terminals, wherein the power borrowing request includes a to-be-borrowed power value and a borrowable power value corresponding to each output terminal respectively;

[0006] determining a target output terminal as a borrower from the plurality of output terminals based on the to-be-borrowed power value in the power borrowing request sent by each output terminal;

[0007] determining a supply output terminal as a borrower from the other output terminals based on the to-be-borrowed power value corresponding to the target output terminal and the borrowable power value corresponding to each output terminal except the target output terminal in the plurality of output terminals respectively, and generating borrowing information corresponding to the supply output terminal respectively;

[0008] sending the borrowing information to the supply output terminal respectively, so that the supply output terminal outputs borrowed power to the target output terminal according to the borrowing information.

[0009] Optionally, the controller includes a control chip.

[0010] Optionally, each output terminal in the plurality of output terminals includes at least one charging terminal.

[0011] Optionally, the plurality of output terminals are distributed in different charging location areas.

[0012] Optionally, the method further comprises:

[0013] after sending the borrowing information to the supply output terminals respectively, it is determined whether the value of the to-be-borrowed power value in the power borrowing request initiated by the target output terminal is 0;

[0014] If yes, it is instructed that the supply output terminal stops outputting borrowed power to the target output terminal.

[0015] Optionally, the target output terminal as a borrower is determined from the output terminals based on the to-be-borrowed power value in the power borrowing request initiated by each output terminal, and the borrowing information corresponding to each output terminal is generated, comprising:

[0016] It is determined whether the to-be-borrowed power value in the power borrowing request initiated by each output terminal is within the range of the borrowable power value interval corresponding to the charging device.

[0017] If the to-be-borrowed power value in the power borrowing request initiated by any of the output terminals is within the range of the borrowable power value interval, the any output terminal is determined as the target output terminal.

[0018] Optionally, before determining whether the to-be-borrowed power value in the power borrowing request initiated by each output terminal is within the range of the borrowable power value interval, it further comprises:

[0019] The maximum borrowable power of the charging device is obtained by adding the borrowable power values corresponding to each output terminal respectively.

[0020] The range of the borrowable power value interval corresponding to the charging device is determined according to the maximum borrowable power and the minimum borrowable power of the charging device.

[0021] Optionally, the supply output terminal as a borrower is determined from the output terminals other than the target output terminal based on the to-be-borrowed power value corresponding to the target output terminal and the borrowable power values corresponding to the output terminals other than the target output terminal respectively, and the borrowing information corresponding to each supply output terminal is generated, comprising:

[0022] The supply output terminal as a borrower is determined from the output terminals other than the target output terminal based on the to-be-borrowed power value corresponding to the target output terminal and the borrowable power values corresponding to the output terminals other than the target output terminal respectively, the corresponding power borrowing proportion of each supply output terminal is calculated, and the borrowing information corresponding to each supply output terminal is generated according to the calculated power borrowing proportion.

[0023] Optionally, based on the to-be-borrowed power value of the target output end and the borrowable power values corresponding to the output ends other than the target output end, a supply output end is determined from the output ends as a borrower, and a corresponding power borrowing ratio is calculated for the supply output end, comprising:

[0024] The borrowable power values corresponding to the other output ends are sorted in descending order to obtain a sorting result;

[0025] The sum of the borrowable power values of the first N output ends in the sorting result is calculated, and the to-be-borrowed power value of the target output end is compared with the sum of the borrowable power values;

[0026] If the to-be-borrowed power value of the target output end is less than or equal to the sum of the borrowable power values, the first N output ends are determined as the supply output ends as borrowers;

[0027] The ratio of the borrowable power value corresponding to each of the supply output ends to the sum of the borrowable power values of the supply output ends is calculated, and the calculated ratio is taken as the power borrowing ratio corresponding to each of the supply output ends.

[0028] Optionally, the method further comprises:

[0029] After the borrowing information is sent to the supply output ends, a second supply output end is re-determined as a borrower according to the to-be-borrowed power value of the target output end and the borrowable power value in the power borrowing request sent by the supply output end, the power borrowing ratio corresponding to the second supply output end is re-calculated, the borrowing information corresponding to the second supply output end is re-generated according to the calculated power borrowing ratio, and the re-generated borrowing information is sent to the second supply output end, so that the second supply output end re-outputs borrowed power to the target output end according to the borrowing information.

[0030] According to a second aspect of the present application, a power borrowing device is provided, which is applied to a controller carried by a charging device, the charging device comprising a plurality of output ends for outputting charging power; wherein the controller is used for power borrowing management of the plurality of output ends; the plurality of output ends respectively carry a power supply controller PMU, and the device comprises:

[0031] A receiving unit is configured to receive a power borrowing request periodically sent by a power supply controller PMU carried by each of the plurality of output ends, wherein the power borrowing request comprises a to-be-borrowed power value and a borrowable power value corresponding to each of the plurality of output ends;

[0032] determining, based on the to-be-borrowed power value in the power borrowing request sent by each of the outputs, a target output as a borrower from the outputs;

[0033] generating, based on the to-be-borrowed power value corresponding to the target output and the borrowable power values corresponding to the other outputs respectively, a supply output as a borrower from the other outputs, and generating borrowing information corresponding to the supply output respectively;

[0034] sending, to the supply output, the borrowing information respectively, so that the supply output outputs borrowed power to the target output according to the borrowing information.

[0035] According to a third aspect of the present application, an electronic device is provided, comprising a communication interface, a processor, a memory and a bus, the communication interface, the processor and the memory are connected with each other through the bus;

[0036] The memory stores machine readable instructions, and the processor executes the above method by invoking the machine readable instructions.

[0037] According to a fourth aspect of the present application, a machine readable storage medium is provided, which stores machine readable instructions, and the machine readable instructions realize the above method when invoked and executed by a processor.

[0038] By applying the technical solutions provided in the present application, a target output as a borrower can be determined from the outputs, and a supply output as a borrower can be determined from the other outputs, and borrowing information can be generated and sent to the supply output, so that the supply output outputs borrowed power to the target output according to the borrowing information. When the power supply of a certain output in the charging device is insufficient, the power supply of other outputs in the charging device can be borrowed, thereby improving the utilization rate of the power supply module in the output with a high vacancy rate in the charging device, and making the charging device more suitable for deployment in the charging network.

[0039] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only represent some embodiments described in the present application, and for those skilled in the art, other drawings can also be obtained based on these drawings.

[0041] Figure 1 Flow chart of an exemplary power borrowing method;

[0042] Figure 2 Schematic diagram of an exemplary charging device;

[0043] Figure 3 Structural schematic diagram of an electronic device in which a power borrowing apparatus in an embodiment of the present specification is located;

[0044] Figure 4 Block diagram of a power borrowing apparatus in an embodiment of the present specification. DETAILED DESCRIPTION

[0045] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with one or more embodiments of the present specification. Instead, they are merely examples of apparatuses and methods consistent with some aspects of one or more embodiments of the present specification as detailed in the appended claims.

[0046] It should be noted that the steps of the corresponding method in other embodiments are not necessarily performed in the order shown and described in the present specification. In some other embodiments, the steps included in the method can be more or less than those described in the present specification. In addition, a single step described in the present specification can be divided into multiple steps for description in other embodiments, and multiple steps described in the present specification can also be combined into a single step for description in other embodiments.

[0047] The three kinds of charging devices currently commonly used to provide charging services for electric vehicles are portable charging boxes, alternating current charging piles and direct current charging piles. Among them, the portable charging box adopts a charging mode of "constant current-constant voltage current limiting-constant voltage floating charging", which can achieve a fully automatic working state, so it is suitable for unattended working environment; the alternating current charging pile is a special power supply device that provides alternating current power for electric vehicles with on-board chargers through conduction. It can be fixedly installed outside the electric vehicle and connected with the alternating current power grid. It only provides power output and has no charging function. It needs to be connected with the on-board charger to charge the electric vehicle. Since the power of the on-board charger is not large, the alternating current charging pile cannot realize fast charging.

[0048] The direct current charging pile is a power supply device that can provide direct current power for non-vehicle-mounted electric vehicle power batteries. Like the alternating current charging pile, it can also be a device that is fixedly installed outside the electric vehicle and connected with the alternating current power grid. However, unlike the alternating current charging pile, the direct current charging pile has a charging function and can charge the electric vehicle without connecting the on-board charger. Therefore, it can provide sufficient power and meet the requirement of fast charging.

[0049] Among them, the direct current charging pile is divided into three categories: single-gun direct current charging pile, double-gun direct current charging pile and group charging direct current charging pile. Among them, the single-gun direct current charging pile is a direct current charging pile with only one charging end. The double-gun direct current charging pile is a direct current charging pile with two charging ends. The group charging direct current charging pile is a direct current charging pile with multiple charging ends. Each charging end can carry a power supply module. Due to the structural limitations of the charging pile equipment, each charging pile is an independent individual and can only distribute direct current power between its own charging ends, but cannot distribute power with other charging piles. Therefore, among the three kinds of direct current charging piles, only the group charging direct current charging pile can avoid the problem of low utilization rate of the power supply module corresponding to the charging end due to the idling of the charging end.

[0050] However, although the group charging direct current charging pile can distribute power among multiple charging ends of the charging pile, the floor area of the group charging direct current charging pile is much larger than that of the single-gun direct current charging pile and the double-gun direct current charging pile. Moreover, as the number of charging ends increases, the floor area of the group charging direct current charging pile will be larger, and the topology of the group charging direct current charging pile will be more complex, thus requiring a more stringent application environment.

[0051] Therefore, the present specification aims to provide a technical solution that can perform power borrowing between output ends and improve the utilization rate of power supply modules with high vacancy rate in charging equipment.

[0052] In implementation, the controller carried by the charging device can receive power borrowing requests periodically sent by power supply controllers PMU carried by each output terminal in the charging device, and the power borrowing request can include a to-be-borrowed power value and a borrowable power value corresponding to the respective output terminal;

[0053] Then, the target output terminal as the borrower can be determined from the respective output terminals based on the to-be-borrowed power value in the power borrowing request sent by each output terminal, and the supply output terminal as the borrower can be determined from the other output terminals based on the to-be-borrowed power value corresponding to the target output terminal and the borrowable power value corresponding to the other output terminals except the target output terminal, and the borrowing information corresponding to the supply output terminal can be generated;

[0054] Further, the borrowing information can be sent to the supply output terminal respectively, so that the supply output terminal outputs borrowed power to the target output terminal according to the borrowing information.

[0055] In the above technical solution, the target output terminal as the borrower can be determined from the respective output terminals by receiving the power borrowing request periodically sent by each output terminal, and the supply output terminal as the borrower can be determined from the other output terminals, and the borrowing information can be generated and sent to the supply output terminal, so that the supply output terminal outputs borrowed power to the target output terminal according to the borrowing information. When the power of a certain output terminal in the charging device is not enough, the power of other output terminals in the charging device can be borrowed, so as to improve the utilization rate of the power supply module in the output terminal with high vacancy rate in the charging device, and the charging device is more suitable for deployment in the charging network.

[0056] Please refer to Figure 1 , Figure 1 is a flowchart of an exemplary power borrowing method. As Figure 1 shown, the method is applied to a controller carried by a charging device, and the charging device can include a plurality of output terminals for outputting charging power; wherein the controller can be used for power borrowing management of the plurality of output terminals; the plurality of output terminals can respectively carry a power supply controller PMU, and the method can include the following steps:

[0057] S102: receiving a power borrowing request periodically sent by a power supply controller PMU carried by each output terminal in the plurality of output terminals, and the power borrowing request includes a to-be-borrowed power value and a borrowable power value corresponding to the respective output terminal;

[0058] The controller carried by the charging device can include a control chip, the control chip can include a borrowing control unit BCU, an output terminal of the plurality of output terminals used for outputting charging power can include a charging pile, the borrowing control unit BCU can perform power borrowing management on the plurality of charging piles, and the plurality of charging piles can each carry a power supply controller PMU, which can be used for power management on power supply modules corresponding to the plurality of charging terminals in the charging pile.

[0059] In an embodiment shown, each output terminal of the plurality of output terminals includes at least one charging terminal.

[0060] In actual application, the charging device can include a topology structure composed of N+1 output terminals, and each output terminal can include M charging terminals. The output terminal can include a charging pile. For example, the charging device can include a topology structure composed of 4 charging piles and 1 borrowing control unit BCU, wherein each charging pile can include 1 module cabinet and 4 charging terminals, each module cabinet can include 1 carried power supply controller PMU, and each charging terminal can correspond to a power supply module. The charging device can also include other forms of topology structures, which are not limited in the specification.

[0061] In an embodiment shown, the plurality of output terminals are distributed in different charging location areas.

[0062] For example, the plurality of output terminals can be distributed in different parking lots to provide power output services for small cars in different parking lots.

[0063] The controller carried by the charging device can receive a power borrowing request periodically sent by a power supply controller PMU carried by each output terminal of the plurality of output terminals. The power borrowing request can include a to-be-borrowed power value and a borrowable power value corresponding to each output terminal.

[0064] In actual application, the borrowing control unit BCU carried by the charging device can receive a power borrowing request periodically sent by a power supply controller PMU carried by each charging pile. The power borrowing request can include a to-be-borrowed power value and a borrowable power value corresponding to each charging pile. The power borrowing request can be a power demand message sent by the power supply controller PMU carried by the charging pile to the borrowing control unit BCU carried by the charging device at a preset periodic timing.

[0065] The available power value can include a multiple of the power supply power of the power supply module. For example, in a charging device including four charging piles, each charging pile can include four charging ends, each charging end can correspond to a power supply module, and each power supply module can include X kw of power supply power in an unused state. If three charging ends of one charging pile are in an unused state, the available power value of the charging pile can be 3X kw. The available power value can also include other values, which are not limited in the present specification.

[0066] It should be noted that the to-be-borrowed power value in the power borrowing request can include 0, and the available power value in the power demand message can also include 0.

[0067] In this way, the controller carried by the charging device can grasp the use of the power supply module in each charging pile in the charging device in real time, and facilitate subsequent allocation of the power supply in the charging device according to the actual situation.

[0068] S104: determining a target output end as a borrower from the output ends based on the to-be-borrowed power value in the power borrowing request sent by each output end;

[0069] The controller carried by the charging device can analyze the received power borrowing request according to the receiving order, obtain the to-be-borrowed power value in the power borrowing request, and determine whether to determine the output end corresponding to the to-be-borrowed power value as the target output end according to the to-be-borrowed power value.

[0070] In an embodiment shown, the determination of the target output end as the borrower from the output ends based on the to-be-borrowed power value in the power borrowing request sent by each output end can include: determining whether the to-be-borrowed power value in the power borrowing request sent by each output end is within the available power value interval range corresponding to the charging device. If the to-be-borrowed power value in the power borrowing request sent by any of the output ends is within the available power value interval range, the any output end can be determined as the target output end.

[0071] The controller carried by the charging device can first compare the to-be-borrowed power value in the power borrowing request with the minimum value of the available power value interval range corresponding to the charging device. If the to-be-borrowed power value is greater than the minimum value of the available power value interval range, the to-be-borrowed power value can be compared with the maximum value of the available power value interval range corresponding to the charging device. If the to-be-borrowed power value is less than or equal to the maximum value of the available power value interval range, the output end corresponding to the to-be-borrowed power value can be determined as the target output end.

[0072] The range of the borrowable power value corresponding to the charging device can include a maximum borrowable power value calculated by the controller of the charging device according to the respective borrowable power values of the output terminals, and a minimum borrowable power value of the charging device.

[0073] In one embodiment, before determining whether the to-be-borrowed power value in the power borrowing request of each output terminal is within the range of the borrowable power value, the respective borrowable power values of the output terminals can be added to obtain a maximum borrowable power value of the charging device, and the range of the borrowable power value corresponding to the charging device can be determined according to the maximum borrowable power value and a minimum borrowable power value of the charging device.

[0074] S106: determining a supply output terminal as a borrower from the output terminals other than the target output terminal based on the to-be-borrowed power value corresponding to the target output terminal and the respective borrowable power values corresponding to the output terminals other than the target output terminal, and generating borrowing information corresponding to the supply output terminal;

[0075] The controller of the charging device can analyze the received power borrowing request corresponding to the output terminal other than the target output terminal, obtain the respective borrowable power values corresponding to the output terminals, and determine a supply output terminal as a borrower from the output terminals other than the target output terminal based on the to-be-borrowed power value of the target output terminal and the respective borrowable power values of the output terminals, and generate borrowing information corresponding to the supply output terminal.

[0076] In one embodiment, the determination of a supply output terminal as a borrower from the output terminals other than the target output terminal based on the to-be-borrowed power value corresponding to the target output terminal and the respective borrowable power values corresponding to the output terminals other than the target output terminal can include calculating a respective power borrowing proportion for the supply output terminal, and the generation of the borrowing information corresponding to the supply output terminal can include generating the borrowing information according to the calculated power borrowing proportion.

[0077] In an embodiment shown, the power borrowing proportion corresponding to each of the supply output terminals is calculated from the other output terminals determined as the borrowing supply output terminals. The available power values corresponding to the other output terminals can be sorted in descending order to obtain a sorting result. The sum of the available power values of the first N positions in the sorting result can be calculated, and the to-be-borrowed power value of the target output terminal can be compared with the sum of the available power values. If the to-be-borrowed power value of the target output terminal is less than or equal to the sum of the available power values, the other output terminals of the first N positions can be determined as the borrowing supply output terminals. The available power value corresponding to each of the supply output terminals can be calculated, and the ratio of the available power value corresponding to each of the supply output terminals to the sum of the available power values of the supply output terminals can be calculated as the power borrowing proportion corresponding to each of the supply output terminals.

[0078] The available power values corresponding to the other output terminals can also be sorted in ascending order to obtain a sorting result. The sum of the available power values of the last N positions in the sorting result can be calculated, and the to-be-borrowed power value of the target output terminal can be compared with the sum of the available power values. If the to-be-borrowed power value of the target output terminal is less than or equal to the sum of the available power values, the other output terminals of the last N positions can be determined as the borrowing supply output terminals.

[0079] In actual application, determining the supply output end as the borrower from the other output ends can be based on the to-be-borrowed power value corresponding to the target output end and the borrowable power values corresponding to the N other output ends in the charging device respectively, the borrowable power values corresponding to the N other output ends can be sorted in descending order to obtain a sorting result, and the sum of the borrowable power values of the first N ranks in the sorting result can be calculated in sequence. Specifically, the to-be-borrowed power value of the target output end can be compared with the borrowable power value of the first rank in the sorting result, if the to-be-borrowed power value of the target output end is less than or equal to the borrowable power value of the first rank, the output end corresponding to the first rank can be determined as the supply output end as the borrower, if the to-be-borrowed power value of the target output end is greater than the borrowable power value of the first rank, the sum of the borrowable power values of the first two ranks in the sorting result can be calculated, and the to-be-borrowed power value of the target output end can be compared with the sum of the borrowable power values, if the to-be-borrowed power value of the target output end is less than or equal to the sum of the borrowable power values, the output ends corresponding to the first rank and the second rank can be determined as the supply output end as the borrower, if the to-be-borrowed power value of the target output end is greater than the sum of the borrowable power values, the sum of the borrowable power values of the first three ranks can be calculated, and the to-be-borrowed power value of the target output end can be compared with the sum of the borrowable power values, and the subsequent steps can be performed based on the comparison result until the supply output end as the borrower is determined.

[0080] In this case, if the number of supply output ends is 1, the ratio of the borrowable power value of the supply output end to the sum of the borrowable power values of the supply output end is 1, and the calculated ratio 1 can be taken as the power borrowing proportion corresponding to the supply output end; if the number of supply output ends is 2, the ratios of the borrowable power values of the two supply output ends to the sum of the borrowable power values of the two supply output ends can be calculated respectively, and the calculated ratios can be taken as the power borrowing proportions corresponding to the two supply output ends respectively.

[0081] It should be noted that N in the N ranks is consistent with N in the number N+1 of output ends included in the charging device.

[0082] For example, if N is 3, the charging device includes 4 output ends, and there are 3 output ends other than the target output end, N can also be any other value, and the present specification does not limit this.

[0083] By allocating the power borrowing ratio instead of the specific power value to the supply output end as the borrowed party, the problem that the borrowed party cannot timely adjust the output power when the borrowing demand of the borrowing party changes can be avoided.

[0084] S108: send the borrowing information to the supply output end respectively, so that the supply output end outputs the borrowed power to the target output end according to the borrowing information.

[0085] The controller of the charging device sends the borrowing information generated based on the power borrowing ratio to the supply output end respectively, and the supply output end can output the borrowed power to the target output end according to the power borrowing ratio in the borrowing information.

[0086] In actual application, the supply output end can multiply the power borrowing ratio in the received borrowing information by the borrowable power value corresponding to the supply output end, and output the borrowed power to the target output end according to the multiplication result.

[0087] In one embodiment shown, after the borrowing information is sent to the supply output end respectively, the second supply output end as the borrowed party is re-determined according to the borrowed power value of the target output end received and the borrowable power value in the power borrowing request sent by the supply output end received, the corresponding power borrowing ratio of the second supply output end is re-calculated respectively, the borrowing information corresponding to the second supply output end is re-generated according to the calculated power borrowing ratio, and the re-generated borrowing information is sent to the second supply output end respectively, so that the second supply output end re-outputs the borrowed power to the target output end according to the borrowing information.

[0088] In this way, the number of supply output ends as the borrowed party and the power borrowing ratio corresponding to the supply output end can be dynamically adjusted according to the change of the borrowed power value of the target output end and the change of the borrowable power value of the supply output end in the power borrowing process, so that the safety problem of excessive output power can be avoided.

[0089] In actual application, after the target output end and the supply output end are determined, and the supply output end starts to output the borrowed power to the target output end according to the power borrowing ratio in the borrowing information, the period of the power borrowing request sent by the power supply controller PMU in the target output end to the controller carried by the charging device can be different from the period of the power borrowing request sent by the power supply controller PMU in the supply output end to the controller carried by the charging device.

[0090] In this way, the controller on the charging device can track the changes in the borrowable power value at the target output terminal and the borrowable power value at the supply output terminal in a timely manner without placing a heavy burden on the CAN bus load rate.

[0091] In one embodiment shown, after the borrowing information is sent to the supply output terminal, it can be determined whether the value of the borrowed power in the power borrowing request initiated by the target output terminal is 0. If the value of the borrowed power in the power borrowing request initiated by the target output terminal is 0, the supply output terminal can be instructed to stop outputting borrowed power to the target output terminal.

[0092] In this way, the power supply to the output terminal can be automatically stopped when the target output terminal no longer needs to borrow power, without human intervention, thus improving the efficiency of power borrowing.

[0093] To facilitate understanding of the process of implementing the above power borrowing method, this specification uses a specific example, taking a charging device including four charging piles, each charging pile including four charging terminals, as an example to describe this application. For ease of description, the above four charging piles can be charging pile A, charging pile B, charging pile C and charging pile D respectively.

[0094] like Figure 2 As shown, Figure 2 This is a schematic diagram of an exemplary charging device. The controller on this charging device can receive and parse power borrowing requests periodically issued by the power controllers (PMUs) on charging piles A, B, C, and D. Charging piles A, B, C, and D can be located in different parking lots. Each of the four charging piles can include four charging terminals, and each charging terminal can correspond to a power supply module. Assuming that each power supply module has a power of 40 kW in its unused state, the borrowable power value of charging pile B can be 120 kW, that of charging pile C can be 80 kW, and that of charging pile D can be 40 kW. The maximum borrowable power can be calculated to be 240 kW. When the controller on the charging device parses the power borrowing request message from charging pile A and obtains a borrowable power value of 140 kW, the minimum borrowable power of the charging device can be assumed to be 20 kW. If the power value to be borrowed is kw, then the power value to be borrowed by the charging pile A can be determined to be within the range of the borrowable power value corresponding to the charging equipment, and the charging pile A can be used as the target charging pile for the borrower.

[0095] The borrowable power values corresponding to the charging piles B, C and D can be sorted in descending order, and the first place is 120 kw, the second place is 80 kw, and the third place is 40 kw. Since the to-be-borrowed power value corresponding to the charging pile A is 140 kw, which is greater than the first place 120 kw, the first place 120 kw and the second place 80 kw can be added to obtain 200 kw. Since the to-be-borrowed power value corresponding to the charging pile A is 140 kw, which is less than or equal to the sum of the first place and the second place, the charging pile B corresponding to the first place and the charging pile C corresponding to the second place can be determined as the lending charging pile of the borrower. Since the borrowable power value of the charging pile B is 120 kw, and the ratio of the above-mentioned borrowable power sum 200 kw is 0.6, the power borrowing proportion corresponding to the charging pile B can be determined as 0.6. Since the borrowable power value of the charging pile C is 80 kw, and the ratio of the above-mentioned borrowable power sum 200 kw is 0.4, the power borrowing proportion corresponding to the charging pile C can be determined as 0.4. Based on the above-mentioned power borrowing proportion, the borrowing information corresponding to the charging piles B and C can be generated respectively, and the above-mentioned borrowing information can be sent to the charging piles B and C respectively, so that the charging piles B and C output the borrowed power to the target output terminal according to the above-mentioned borrowing information.

[0096] The specific details of outputting borrowed power are taken as an example of the charging pile B. The charging pile B receives the above-mentioned borrowing information, analyzes the above-mentioned borrowing information to obtain the power borrowing proportion 0.6, multiplies the power borrowing proportion with the to-be-borrowed power value 140 kw corresponding to the charging pile A, and obtains 84 kw. Then the borrowed power 84 kw can be output to the charging pile A.

[0097] When the charging piles B and C output borrowed power to the charging pile A, the controller of the charging device can still receive the power borrowing requests sent by the charging piles, and can re-determine the second supply output end as the borrower according to the change of the to-be-borrowed power value in the borrowing request sent by the charging pile A and the change of the borrowable power value in the borrowing requests sent by the charging piles B and C. For example, when the to-be-borrowed power value of the charging pile A can change to 80 kw, the borrowable power value of the charging pile B can change to 80 kw, and the borrowable power value of the charging pile C can change to 40 kw, the second supply charging pile as the borrower can be re-determined. Since the to-be-borrowed power value of the charging pile A is equal to the borrowable power value of the charging pile B, the charging pile B can be re-determined as the second supply charging pile as the borrower. Since the ratio of the borrowable power value of the charging pile B to the sum of the borrowable power values of the charging piles B and C is 1, 1 is determined as the power borrowing proportion corresponding to the charging pile B, and the borrowing information corresponding to the charging pile B is re-generated based on the power borrowing proportion. After receiving the borrowing information, the charging pile B can parse the borrowing information to obtain the power borrowing proportion of 1, multiply the power borrowing proportion by the to-be-borrowed power value of 80 kw, and obtain 80 kw. Therefore, the charging pile A can output borrowed power of 80 kw.

[0098] When the to-be-borrowed power value in the power borrowing request sent by the charging pile A and received by the controller of the charging device is 0, the charging pile B stops outputting borrowed power to the charging pile A.

[0099] Corresponding to the embodiment of the power borrowing method, the present specification also provides an embodiment of a power borrowing device.

[0100] Please refer to Figure 3 , Figure 3 is a structural schematic diagram of an electronic device in which the power borrowing device in an embodiment of the present specification is located. On the hardware level, the device includes a processor 302, an internal bus 304, a network interface 306, a memory 308, and a non-volatile memory 310, and of course can also include other hardware required by the business. One or more embodiments of the present specification can be implemented in a software manner, such as reading a corresponding computer program from the non-volatile memory 310 into the memory 308 by the processor 303 and then running. Of course, in addition to the software implementation, one or more embodiments of the present specification do not exclude other implementation manners, such as logic devices or a combination of software and hardware, and the like, that is, the execution subject of the following processing flow is not limited to each logic unit, but can also be hardware or a logic device.

[0101] Please refer to Figure 4 , Figure 4is a block diagram of a power borrowing device in an embodiment of the present specification. The power borrowing device can be applied to an electronic device as shown in Figure 3 to implement the technical solutions of the present specification. Among them, the power borrowing device is applied to a controller carried by a charging device, and the charging device can include a plurality of output terminals for outputting charging power; wherein the controller can be used for power borrowing management for a plurality of output terminals; the plurality of output terminals can be respectively carried by a power supply controller PMU; the device can include:

[0102] The receiving unit can be used to receive the power borrowing request periodically sent by the power supply controller PMU carried by each output terminal in the plurality of output terminals, and the power borrowing request can include the to-be-borrowed power value and the borrowable power value corresponding to each output terminal respectively;

[0103] The determination unit can be used to determine the target output terminal as the borrower from each output terminal based on the to-be-borrowed power value in the power borrowing request sent by each output terminal;

[0104] The generation unit can be used to determine the supply output terminal as the borrower from other output terminals based on the to-be-borrowed power value corresponding to the target output terminal and the borrowable power value corresponding to each output terminal except the target output terminal in each output terminal, and can generate borrowing information corresponding to the supply output terminal respectively;

[0105] The sending unit can be used to send the borrowing information to the supply output terminal respectively, so that the supply output terminal outputs the borrowed power to the target output terminal according to the borrowing information.

[0106] In the embodiment, the controller can include a control chip.

[0107] Each output terminal in the plurality of output terminals can include at least one charging terminal.

[0108] The plurality of output terminals can be distributed in different charging position areas.

[0109] The receiving unit can also be used to:

[0110] After sending the borrowing information to the supply output terminal respectively, determine whether the value of the to-be-borrowed power value in the power borrowing request initiated by the target output terminal is 0;

[0111] If yes, instruct the supply output terminal to stop outputting borrowed power to the target output terminal.

[0112] The determination unit can be specifically used to:

[0113] determine whether the to-be-borrowed power value in the power borrowing request sent by each output terminal is within the range of the borrowable power value corresponding to the charging device;

[0114] if the to-be-borrowed power value in the power borrowing request sent by any of the output terminals is within the range of the borrowable power value, determine the any output terminal as a target output terminal.

[0115] The determination unit can be specifically configured to:

[0116] add the borrowable power values corresponding to the output terminals respectively to obtain the maximum borrowable power of the charging device;

[0117] determine the range of the borrowable power value corresponding to the charging device according to the maximum borrowable power and the minimum borrowable power of the charging device.

[0118] The generation unit can be specifically configured to:

[0119] determine, from the other output terminals, a supply output terminal as a borrower based on the to-be-borrowed power value corresponding to the target output terminal and the borrowable power values corresponding to the other output terminals except the target output terminal, calculate a corresponding power borrowing proportion for the supply output terminal respectively, and generate borrowing information corresponding to the supply output terminal respectively according to the calculated power borrowing proportions.

[0120] The generation unit can be specifically configured to:

[0121] sort the borrowable power values corresponding to the other output terminals in descending order to obtain a sorting result;

[0122] calculate the sum of the borrowable power values of the first N ranks of the sorting result in sequence, and compare the to-be-borrowed power value of the target output terminal with the sum of the borrowable power values in sequence;

[0123] if the to-be-borrowed power value of the target output terminal is less than or equal to the sum of the borrowable power values, determine the other output terminals in the first N ranks as the supply output terminals as borrowers.

[0124] calculate the ratio of the borrowable power value corresponding to each output terminal in the supply output terminal to the sum of the borrowable power values of the supply output terminal, and take the calculated ratio as the power borrowing proportion corresponding to the supply output terminal.

[0125] The generation unit can be specifically configured to:

[0126] After the borrowing information is respectively sent to the supply output end, according to the borrowed power value of the target output end received and the borrowable power value in the power borrowing request sent by the supply output end, a second supply output end as the borrower is re-determined, and a corresponding power borrowing ratio for the second supply output end is re-calculated, and according to the calculated power borrowing ratio, the borrowing information corresponding to the second supply output end is re-generated, and the re-generated borrowing information is respectively sent to the second supply output end, so that the second supply output end re-outputs borrowed power to the target output end according to the borrowing information.

[0127] The apparatus, module or unit illustrated in the above embodiments can be specifically implemented by a computer chip or entity, or by a product with certain functions. A typical implementation device is a computer, and the specific form of the computer can be a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

[0128] In a typical configuration, a computer includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0129] The memory can include non-persistent memory in computer readable media, random access memory (RAM), and / or non-volatile memory, such as read-only memory (ROM) or Flash memory. The memory is an example of computer readable media.

[0130] Computer readable media includes permanent and non-permanent, removable and non-removable media implemented by any method or technology for storing information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, disk storage, quantum memory, graphene-based storage medium or other magnetic storage device, or any other non-transmission medium that can be used to store information accessible by a computing device. According to the definition in this paper, computer readable media does not include transitory computer readable media, such as modulated data signals and carriers.

[0131] It is also important to note that the terms "comprises", "comprising", or other variations 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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0132] The above description of the specific embodiments has been presented for the purpose of illustration. It is not intended to be exhaustive or to limit the embodiments to the precise forms disclosed. Many modifications, equivalents, and variations within the scope of the embodiments are possible. The specific implementation described is chosen for the purposes of illustration only and not limitation. In some instances, the acts or steps are performed in a different order from the implementation described herein and still achieve the desired outcome.

[0133] The terminology used in this description is for the purpose of describing particular embodiments only and is not intended to limit the embodiments. As used herein, the singular articles "a", "the", and "said" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "including", and "having" are used herein to mean that the named process, method, product, or apparatus includes, but is not limited to, the specific elements named. The use of the term "or" in the context of a list of items prefaced by "comprising" or "including" indicates a disjunctive list, such that, for example, a list of "comprising at least one of A, B, or C" means that the list includes A alone, B alone, C alone, or any combination thereof.

[0134] It is to be understood that the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It is to be understood that the term "and / or" as used herein encompasses all possible combinations of the items listed. It is further understood that the terms "comprises", "comprising", "includes", "including", "has", "having" and the like are to be construed as open-ended terms, indicating the presence of the stated item or items, but not excluding the presence of one or more additional items.

[0135] The above description is intended to be illustrative and not restrictive. Many other embodiments will be apparent to those of skill in the art upon reading and understanding the above description. Although the present embodiments have been described with reference to specific exemplary embodiments, it is recognized that these are not the only embodiments and that considerable variation on these embodiments falls within the scope of the embodiments. Accordingly, the present embodiments are intended to embrace all such variations, modifications and alternatives of the embodiments described herein.

Claims

1. A power borrowing method, the method being applied to a controller mounted on a charging device, the charging device including a plurality of output terminals for outputting charging power; wherein, The controller is used for power borrowing management of the plurality of output terminals; each of the plurality of output terminals is equipped with a power control unit (PMU); the method includes: The system receives power borrowing requests periodically issued by the power controller (PMU) on each of the plurality of output terminals. The power borrowing requests include the power value to be borrowed and the power value available for borrowing, which are respectively associated with each of the output terminals. Based on the power borrowing value in the power borrowing request issued by each of the output terminals, the target output terminal as the borrower is determined from each of the output terminals. Based on the borrowable power value corresponding to the target output terminal and the borrowable power values ​​corresponding to the other output terminals besides the target output terminal, the output terminal with the larger borrowable power value is preferentially determined from the other output terminals as the supply output terminal to be borrowed. The corresponding power borrowing ratio is calculated for the supply output terminal, and the borrowing information corresponding to the supply output terminal is generated according to the calculated power borrowing ratio. The borrowing information is sent to the supply output terminal, so that the supply output terminal outputs borrowed power to the target output terminal according to the borrowing information.

2. The method according to claim 1, wherein the controller comprises a control chip.

3. The method according to claim 1, wherein each of the plurality of output terminals includes at least one charging terminal.

4. The method according to claim 1, wherein the plurality of output terminals are distributed in different charging location areas.

5. The method according to claim 1, further comprising: After sending the borrowing information to the supply output end, determine whether the value of the power to be borrowed in the power borrowing request initiated by the target output end is 0. If so, instruct the supply output terminal to stop outputting borrowed power to the target output terminal.

6. The method according to claim 1, wherein determining the target output terminal as the borrower based on the borrowed power value in the power borrowing requests issued by each output terminal comprises: Determine whether the power value to be borrowed in the power borrowing request issued by each output terminal is within the range of the available power value corresponding to the charging device; If the power borrowing request issued by any of the output terminals contains a power value to be borrowed that falls within the range of available power values, then that output terminal is determined to be the target output terminal.

7. The method according to claim 6, further comprising, before determining whether the power value to be borrowed in the power borrowing request issued by each output terminal is within the range of the available power value corresponding to the charging device: The maximum available power of the charging device is obtained by adding the available power values ​​corresponding to each of the output terminals. Based on the maximum available power and the minimum available power of the charging device, the range of available power values ​​corresponding to the charging device is determined.

8. The method according to claim 1, based on the borrowable power value corresponding to the target output terminal and the borrowable power values ​​corresponding to the other output terminals besides the target output terminal, preferentially determining the output terminal with the larger borrowable power value from the other output terminals as the supply output terminal to be borrowed, and calculating the corresponding power borrowing ratio for each supply output terminal, including: The available power values ​​corresponding to the other output terminals are sorted in descending order to obtain the sorting results; The total available power of the first N positions of the sorting results is calculated sequentially, and the available power value of the target output terminal is compared with the total available power sequentially. If the borrowable power value of the target output terminal is less than or equal to the total borrowable power, then the other output terminals in the top N positions are determined as the supply output terminals of the borrower. Calculate the ratio of the available power value corresponding to each output terminal in the supply output terminal to the total available power of the supply output terminals, and use the calculated ratio as the power borrowing ratio corresponding to each supply output terminal.

9. The method according to claim 8, further comprising: After sending the borrowing information to the supply output end, based on the received borrowed power value of the target output end and the borrowable power value in the power borrowing request issued by the supply output end, the second supply output end as the borrower is re-determined, and the corresponding power borrowing ratio for the second supply output end is recalculated. Based on the calculated power borrowing ratio, the borrowing information corresponding to the second supply output end is regenerated, and the regenerated borrowing information is sent to the second supply output end, so that the second supply output end can output borrowed power to the target output end again according to the borrowing information.

10. A power borrowing device, applied to a controller mounted on a charging device, the charging device including a plurality of output terminals for outputting charging power; wherein, The controller is used for power borrowing management of the plurality of output terminals; each of the plurality of output terminals is equipped with a power control unit (PMU); the device includes: The receiving unit is used to receive power borrowing requests periodically issued by the power controller PMU mounted on each of the plurality of output terminals. The power borrowing requests include the power value to be borrowed and the power value available for borrowing corresponding to each of the output terminals respectively. The determining unit is used to determine the target output terminal as the borrower from the output terminals based on the power borrowing request value in the power borrowing request issued by each output terminal; The generation unit is configured to, based on the borrowable power value corresponding to the target output terminal and the borrowable power values ​​corresponding to the other output terminals besides the target output terminal, preferentially determine the output terminal with the larger borrowable power value from the other output terminals as the supply output terminal to be borrowed, calculate the corresponding power borrowing ratio for the supply output terminal, and generate borrowing information corresponding to the supply output terminal based on the calculated power borrowing ratio. The sending unit is used to send the borrowing information to the supply output terminal respectively, so that the supply output terminal outputs the borrowed power to the target output terminal according to the borrowing information.

11. An electronic device, comprising a communication interface, a processor, a memory, and a bus, wherein the communication interface, the processor, and the memory are interconnected via the bus; The memory stores machine-readable instructions, and the processor executes the method according to any one of claims 1 to 8 by invoking the machine-readable instructions.

12. A machine-readable storage medium storing machine-readable instructions that, when invoked and executed by a processor, implement the method of any one of claims 1 to 8.

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