Charging and battery swapping station and charging and battery swapping system

Abstract

The utility model provides a battery charging and swapping station and a battery charging and swapping system, and the battery charging and swapping station comprises a power module and a power distribution module. One end of the power module is connected with a power grid bus, and the other end is connected with one end of the power distribution module; the other end of the power distribution module is connected with a plurality of charging piles; wherein the plurality of charging piles share the power distribution module; the power module is configured to perform AC-DC electric energy conversion; and the power distribution module is configured to transmit the electric energy converted by the power module to the charging pile. According to the invention, the power module and the power distribution module are arranged in the charging station, and the power distribution module can distribute the electric energy converted by the power module to each charging pile connected with the power distribution module. A power module does not need to be arranged in the charging pile, the charging pile and the charging and battery replacing station share the power module, and the overall size of the charging pile can be reduced while the cost input of the power module is reduced.

Description

Technical Field

[0001] The present application relates to a field, and specifically, to a charging and swapping station and a charging and swapping system. Background Art

[0002] With the rapid development of new energy, more and more devices use electricity as a power source, such as cars and motorcycles powered by batteries. At the same time, there are more and more charging and swapping systems as energy supply stations for electric drive equipment.

[0003] The current charging and swapping system generally includes charging piles and charging and swapping stations, wherein the power modules of the charging and swapping stations and the charging piles are independent of each other, resulting in high construction and maintenance costs for the charging and swapping stations and the charging piles, which is not conducive to the promotion of electric drive equipment. Summary of the invention

[0004] In view of this, an object of the embodiments of the present application is to provide a charging and swapping station and a charging and swapping system that can reduce the investment cost of power modules.

[0005] In the first aspect, an embodiment of the present application provides a charging and swapping station, comprising: a power module and a power distribution module; one end of the power module is connected to a power grid bus, and the other end of the power module is connected to one end of the power distribution module; the other end of the power distribution module is connected to a plurality of charging piles; wherein the plurality of charging piles share the power distribution module; the power module is configured to perform AC / DC power conversion; and the power distribution module is configured to transmit the electric energy converted by the power module to the charging pile.

[0006] In the above implementation process, by setting a power module and a power distribution module in the charging and swapping station, the power distribution module can distribute the electric energy converted by the power module to each charging pile connected to the power distribution module. In this way, the charging pile only needs to directly charge the charging device after obtaining the electric energy allocated by the power distribution module. The charging pile and the charging and swapping station share the power module, which can reduce the cost investment of the power module and reduce the overall size of the charging pile.

[0007] In one embodiment, the power distribution module includes multiple switches; each switch of the power distribution module is connected to one of the charging piles respectively; the switch is configured to be disconnected or connected according to the charging and swapping strategy to transmit the electric energy converted by the power module to the charging pile connected to the switch.

[0008] In the above implementation process, by setting multiple switches in the power distribution module, each switch is connected to a charging pile, and then by controlling the connection or disconnection of each switch in the power distribution module, the electric energy converted by the power module can be transmitted to the charging pile corresponding to the charging strategy according to the charging and discharging strategy. Since the switch structure is simple and the price is low, by setting multiple switches in the power distribution module, the cost and volume of the power distribution module can be reduced while completing power distribution.

[0009] In one embodiment, the charging and swapping station also includes: an energy storage module; the energy storage module is connected to one end of the power distribution module away from the power module; the power distribution module is configured to transmit the electric energy converted by the power module to the energy storage module; the energy storage module is configured to store the electric energy transmitted by the power distribution module.

[0010] In the above implementation process, by setting up an energy storage module, the energy storage module can store electric energy, so that during the peak power consumption period, the energy storage module can transmit electric energy to the charging pile, thereby reducing the amount of electricity that the charging equipment needs to charge directly through the power grid during the peak power consumption period, while reducing the charging cost, it can also reduce the burden on the power grid and improve the stability and safety of the power system operation. In addition, when the power grid is disconnected from the charging and swapping station, the energy storage module can also transmit electric energy to the charging pile to replace the power grid to transmit electric energy to the charging pile, thereby improving the stability of the power swapping station.

[0011] In one embodiment, there are multiple power distribution modules, and each of the power distribution modules includes multiple switches; the switches of each power distribution module are respectively connected to a first preset number of the energy storage modules and a second preset number of the charging piles, and the switches are configured to be disconnected or connected according to the charging and swapping strategy to transmit the electric energy converted by the power module to the energy storage module connected to the switch and / or the charging pile connected to the switch; the energy storage module is configured to transmit the electric energy in the energy storage module to the charging pile when the charging pile is powered by the energy storage module.

[0012] In the above implementation process, by connecting the charging pile and the energy storage module in each power distribution module, when the energy storage module is needed to power the charging pile, the charging pile can be directly powered by the energy storage module connected to the same power distribution module. The electric energy in the energy storage module does not need to be converted multiple times by the power module before being transmitted to the charging pile, which improves the charging efficiency when the energy storage module powers the charging pile, while reducing the consumption of electric energy during the transmission process and improving the quality of electric energy.

[0013] In one embodiment, the power module includes a bidirectional power module; one end of the bidirectional power module is connected to a grid bus, and the other end of the bidirectional power module is connected to one end of the power distribution module; the other end of the power distribution module connected to the bidirectional power module is connected to the energy storage module; or the other end of the power distribution module connected to the bidirectional power module is connected to the energy storage module and the charging pile; the bidirectional power module is configured to, when the charging pile is powered by the grid, convert the AC power of the grid bus into DC power and transmit it to the energy storage module through the power distribution module; and when the charging pile is powered by the energy storage module, convert the DC power of the energy storage module into AC power to the grid bus.

[0014] In the above implementation process, by setting the power module as a bidirectional power module, the bidirectional power module can convert the AC power of the power grid into DC power and transmit it to the charging pile, i.e., the energy storage module, through the power distribution module, and can also convert the DC power stored in the energy storage module into AC power and transmit it to the charging pile connected to other power modules through the bus power grid. By setting the bidirectional power module, the electric energy of the energy storage module connected to the bidirectional power module can power the charging pile connected to other power modules in the charging and swapping station, thereby increasing the power supply range of the energy storage module and improving the charging flexibility of the charging and swapping station when using the energy storage module for charging.

[0015] In one embodiment, the power module also includes a unidirectional power module; one end of the unidirectional power module is connected to the grid bus, and the other end of the unidirectional power module is connected to one end of the power distribution module; the other end of the power distribution module connected to the unidirectional power module is connected to the charging pile; or the other end of the power distribution module connected to the unidirectional power module is connected to the energy storage module and the charging pile; the unidirectional power module is configured to convert the AC power of the grid bus into DC power and transmit it to the energy storage module through the power distribution module.

[0016] In the above implementation process, by setting some power modules as unidirectional power modules, the bidirectional power modules can only serve as a supplement to the unidirectional power modules. That is, when the energy storage module connected to the unidirectional power module does not provide enough electric energy for the charging pile connected to the unidirectional power module, the energy storage module connected to the bidirectional power module will supply power to the charging pile connected to the unidirectional power module. Therefore, the charging and swapping station can also supply power to the charging pile through the energy storage module by setting fewer bidirectional power modules. Since bidirectional power modules are more expensive than unidirectional power modules, the cost of power modules in the charging and swapping station can be reduced by setting some unidirectional power modules.

[0017] In one embodiment, when the charging pile is powered by the energy storage module, the energy storage module transmits the stored electric energy to the bidirectional power module through the power distribution module connected to the energy storage module; the bidirectional power module converts the electric energy and transmits it to the grid bus; the grid bus transmits the electric energy to the power distribution module connected to the unidirectional power module through the unidirectional power module; the power distribution module transmits the electric energy to the charging pile connected to the power distribution module.

[0018] In the above implementation process, the electric energy stored in the energy storage module connected to the bidirectional power module is converted into alternating current through the bidirectional power module, which can be transmitted to other unidirectional power modules connected to the grid bus through the grid bus. After the alternating current is converted into direct current through the unidirectional power module, it is transmitted to the charging pile connected to the unidirectional power module, thereby completing the charging of the charging pile connected to the unidirectional power module by the energy storage module connected to the bidirectional power module, thereby improving the power supply of the energy storage module to the charging pile, and improving the power supply stability when the energy storage module supplies power to the charging pile.

[0019] In one embodiment, when the energy storage module is used to power the charging pile, the energy storage module transmits the stored electric energy to the charging pile connected to the same power distribution module as the energy storage module through the power distribution module connected to the energy storage module.

[0020] In the above implementation process, the charging pile is directly powered by an energy storage module connected to the same power distribution module. The electric energy in the energy storage module does not need to be converted multiple times by the power module before being transmitted to the charging pile, thereby improving the charging efficiency of the energy storage module when powering the charging pile. At the same time, it reduces the consumption of electric energy during the transmission process and improves the quality of electric energy.

[0021] In the second aspect, an embodiment of the present application also provides a charging and swapping system, including: a charging pile and the first aspect, or a charging and swapping station in any possible implementation of the first aspect; the charging and swapping station is connected to a plurality of the charging piles, and the charging and swapping station is configured to supply power to the charging piles; the charging piles are configured to charge the devices to be charged.

[0022] In the above implementation process, the charging and swapping station is connected with the charging pile to form a charging and swapping system. Since the charging and swapping station is provided with a power module and a power distribution module, the power module and the power distribution module can respectively distribute corresponding electric energy to different charging piles. Therefore, it is not necessary to set up a power module in the charging pile, which can reduce the cost of the power module and the overall size of the charging pile, thereby reducing the space occupied by the charging and swapping system.

[0023] In one embodiment, the charging pile is plug-in connected to the charging and swapping station; wherein the number of the charging piles is determined according to the operation and maintenance status of the charging and swapping system.

[0024] In the above implementation process, by setting the charging pile and the charging and swapping station as a plug-in connection, the charging pile can be easily removed and installed, and then the charging pile can be reduced or added according to the operation and maintenance conditions, thereby improving the utilization rate of the charging pile and reducing costs.

[0025] In order to make the above-mentioned objects, features and advantages of the present application more obvious and understandable, embodiments are given below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of a charging and swapping station without an energy storage module provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of the connection between the power module, power distribution module and charging pile provided in the embodiment of the present application;

[0029] Figure 3 A schematic diagram of a charging and swapping station provided with an energy storage module according to an embodiment of the present application;

[0030] Figure 4 A schematic diagram of the connection between the power distribution module, the power module, the energy storage module and the charging pile provided in the embodiment of the present application;

[0031] Figure 5 A schematic diagram of a charging and swapping station including a bidirectional power module and a unidirectional power module provided in an embodiment of the present application.

[0032] Description of the drawings: 100 - charging and swapping station, 110 - power module, 111 - bidirectional power module, 112 - unidirectional power module, 120 - power distribution module, 121 - switch, 130 - energy storage module, 200 - charging pile, 300 - grid bus. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0036] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present application, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are orientations or positional relationships that are commonly visited when the application product is used. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be interpreted as a limitation of the present application.

[0038] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] It should be noted that, in the absence of conflict, the features in the embodiments of the present application may be combined with each other.

[0040] The charging and swapping system is a place that quickly and efficiently replenishes power for new energy equipment and can supply power to new energy equipment. The charging piles and charging and swapping stations in the current charging and swapping system are independent of each other, and the power modules do not affect each other. After the charging piles are installed, their positions and quantities generally do not change.

[0041] However, the charging piles in the current charging and swapping system will increase the load on the power grid and affect the stability of the power grid operation during centralized charging, and the resources of each device in the charging and swapping system cannot be fully utilized, resulting in a waste of resources.

[0042] In view of this, the present application proposes a charging and swapping station, in which a power module and a power distribution module are arranged. The power distribution module is used to distribute the electric energy transmitted by the power module to the corresponding charging pile. The charging pile only needs to transmit the corresponding electric energy to the device to be charged. Therefore, the charging pile does not need to be equipped with a power module to reduce the power module cost of the charging pile. In addition, the power distribution module in the battery swapping station can be used to uniformly distribute the electric energy of each charging pile, and the charging pile and energy storage module can be charged according to different charging and discharging strategies, thereby reducing the situation of centralized charging of the charging pile. By setting the charging pile and the battery swapping station as a plug-in connection, the battery swapping station can be flexibly increased or reduced, thereby improving the utilization rate of each device in the charging and swapping system.

[0043] like Figure 1 , which is a schematic diagram of a charging and swapping station 100 provided in an embodiment of the present application, including: a power module 110 and a power distribution module 120 .

[0044] Among them, one end of the power module 110 is connected to the grid bus 300 , and the other end of the power module 110 is connected to one end of the power distribution module 120 ; the other end of the power distribution module 120 is connected to a plurality of charging piles 200 .

[0045] The multiple charging piles 200 here share a power distribution module 120 ; the power module 110 is configured to perform AC / DC power conversion; and the power distribution module 120 is configured to transmit the power converted by the power module 110 to the charging piles 200 .

[0046] It can be understood that the power module 110 is used to convert the alternating current transmitted by the grid bus 300 into direct current, and then transmit it to the corresponding charging pile 200 through the power distribution module 120 .

[0047] The above-mentioned power distribution module 120 is used to distribute the electric energy transmitted by the power module 110 to the charging pile 200 according to the charging and swapping strategy. The charging and swapping strategy can be stored in the power distribution module 120 in advance; it can also be stored in the control device to control the power distribution module 120 to distribute the electric energy transmitted by the power module 110 through the control device; the charging and swapping strategy can also be generated in real time in the power distribution module 120 or the control device. The method for determining the charging and swapping strategy here can be set according to actual conditions, and this application does not make specific restrictions.

[0048] The charging and swapping strategy here can be: during peak electricity consumption periods, the energy storage module 130 gives priority to supplying power to the charging pile 200, and the power grid serves as a supplementary power source for the energy storage module 130; during peak electricity consumption periods, the energy storage module 130 and the charging pile 200 are charged simultaneously, or during peak electricity consumption periods, only the energy storage module 130 or only the charging pile 200 is charged. The charging and swapping strategy can also be: charging the charging pile 200 connected to the device to be charged. The charging and swapping strategy can also be: after the power grid is disconnected from the charging and swapping station 100, the energy storage module 130 is discharged to transfer the electric energy stored in the energy storage module 130 to the charging pile 200 to charge the device to be charged. The charging and swapping strategy can be adjusted or set according to actual conditions, and this application does not impose specific restrictions.

[0049] The above-mentioned devices to be charged can be rechargeable devices such as new energy vehicles, electric vehicles, batteries, robots, etc.

[0050] It can be understood that in the actual operation of the charging and swapping station 100, the situation where the multiple charging piles 200 are charged at the same time is particularly small. Therefore, the charging piles 200 involved in charging can be determined according to the actual power swapping demand of the charging and swapping station 100. For example, the charging and swapping station 100 includes a first charging pile 200, a second charging pile 200, and a third charging pile 200, and the exchange point needs to charge two devices to be charged within a certain period of time. At this time, the corresponding charging strategy can be determined, that is, two charging piles 200 participate in the charging in the current period, and the power distribution module 120 distributes the electric energy transmitted by the power module 110 to the first charging pile 200 and the second charging pile 200, or the second charging pile 200 and the third charging pile 200, or the first charging pile 200 and the third charging pile 200, etc., according to the charging strategy, so as to transmit all the electric energy transmitted by the power module 110 to the two charging piles 200 that charge the devices to be charged.

[0051] In some embodiments, if the device to be charged is set with a corresponding rechargeable period, and the rechargeable period includes a peak power consumption period and a level peak power consumption period. The power distribution module 120 can preferentially distribute the electric energy transmitted by the power module 110 to the charging pile 200 during the level peak power consumption period. If the device to be charged can be fully charged during the level peak power consumption period, the electric energy transmitted by the power module 110 will no longer be distributed to the charging pile 200 during the peak power consumption period. If the device to be charged cannot be fully charged during the level peak power consumption period, the electric energy transmitted by the power module 110 will be further distributed to the charging pile 200 during the peak power consumption period.

[0052] The above-mentioned way in which the power distribution module 120 transmits the electric energy converted by the power module 110 to the charging pile 200 is merely exemplary. The way in which the power distribution module 120 distributes electric energy to the charging pile 200 can be adjusted according to actual conditions, and this application does not impose any specific restrictions.

[0053] The charging pile 200 here may not be provided with a power module 110. Of course, in some special cases, the charging pile 200 may also be provided with a power module 110. For example, the charging pile 200 needs to adjust the received power or transform the received electric energy for use in a display device, a control device, and the like.

[0054] In the above implementation process, by setting the power module 110 and the power distribution module 120 in the charging and swapping station 100, the power distribution module 120 can distribute the electric energy converted by the power module 110 to each charging pile 200 connected to the power distribution module 120. In this way, the charging pile 200 only needs to directly charge the charging device after obtaining the electric energy distributed by the power distribution module 120, and the power module 110 does not need to be set inside the charging pile 200. The charging pile 200 shares the power module 110 with the charging and swapping station 100, which reduces the cost investment of the power module 110 and can also reduce the overall size of the charging pile 200.

[0055] In one possible implementation, Figure 2 As shown, the power distribution module 120 includes a plurality of switches 121 .

[0056] Each switch 121 of the power distribution module 120 is connected to a charging pile 200 .

[0057] The switch 121 here is configured to be disconnected or connected according to the charging and swapping strategy to transmit the electric energy converted by the power module 110 to the charging pile 200 connected to the switch 121 .

[0058] The switch 121 mentioned above can be a contactor, a miniature circuit breaker, a contact of a relay, etc. The type of the switch 121 can be adjusted according to actual conditions, and this application does not impose any specific restrictions.

[0059] It can be understood that the power distribution module 120 turns on or off the corresponding switch 121 according to the charging and swapping strategy to transmit the electric energy converted by the power module 110 to the charging pile 200 connected to the turned-on switch 121.

[0060] For example, Figure 2 As shown, if the current charging and swapping strategy is: Figure 2 The first charging pile 200 and the last charging pile 200 from left to right in the charging pile 200 are charging the device to be charged. Then K10, K11, K20 and K23 in the power distribution module 120 are turned on, and other switches 121 are turned off.

[0061] If the current charging and swapping strategy is: Figure 2The third charging pile 200 from left to right in the charging pile 200 is charging the device to be charged. Then K10 and K13 in the power distribution module 120 are turned on, and other switches 121 are turned off. Or K20 and K13 in the power distribution module 120 are turned on, and other switches 121 are turned off. Or K10, K20 and K13 in the power distribution module 120 are turned on, and other switches 121 are turned off.

[0062] Optionally, one power distribution module 120 may be used to distribute the electric energy converted by one power module 110 (not shown in the figure), and one power distribution module 120 may be used to distribute the electric energy converted by multiple power modules 110 ( Figure 1 , Figure 2 The configuration of the power distribution module 120 and the power module 110 can be adjusted according to actual conditions, and this application does not impose any specific restrictions.

[0063] In the above implementation process, by setting a plurality of switches 121 in the power distribution module 120, each switch 121 is connected to a charging pile 200, and then by controlling the on or off of each switch 121 in the power distribution module 120, the electric energy converted by the power module 110 can be transmitted to the charging pile 200 corresponding to the charging strategy according to the charging and discharging strategy. Since the switch 121 has a simple structure and a low price, by setting a plurality of switches 121 in the power distribution module 120, the cost and volume of the power distribution module 120 can be reduced while completing power distribution.

[0064] In one possible implementation, Figure 3 As shown, the charging and swapping station 100 also includes: an energy storage module 130.

[0065] The energy storage module 130 is connected to an end of the power distribution module 120 away from the power module 110 .

[0066] The power distribution module 120 here is configured to transmit the electric energy converted by the power module 110 to the energy storage module 130 ; the energy storage module 130 is configured to store the electric energy transmitted by the power distribution module 120 .

[0067] The energy storage module 130 may be a charging and discharging device such as a battery pack or a storage battery that can store electrical energy. The energy storage module 130 may include one or more. The specific structure and quantity of the energy storage module 130 may be adjusted according to actual conditions, and this application does not impose specific restrictions.

[0068] In some embodiments, if the energy storage module 130 is a battery pack, the energy storage module 130 can also be used for battery replacement. For example, the energy storage module 130 is a battery pack of a new energy vehicle, and the battery pack of the new energy vehicle is a detachable battery pack. When the new energy vehicle is out of power, the fully charged battery pack in the charging and swapping station 100 can be directly installed on the new energy vehicle, and the battery pack with no power in the new energy vehicle can be connected to the charging and swapping station 100 for charging, thereby reducing the charging time of the new energy vehicle.

[0069] It is understandable that in actual power grid power supply, it can usually include peak power consumption period and off-peak power consumption period. Generally speaking, the electricity price is higher during peak power consumption period and lower during off-peak power consumption period. Therefore, the charging cost of charging the device to be charged during peak power consumption period will be relatively higher than that of charging during off-peak power consumption period, and if the devices to be charged are charged in a centralized manner, it will increase the burden on the power grid, affecting the power grid capacity and the stability and safety of the system operation.

[0070] By setting up the energy storage module 130, the energy storage module 130 can store electric energy during the peak power consumption period, and transmit the stored electric energy to the charging pile 200 during the peak power consumption period, so that the charging pile 200 can charge the equipment to be charged through the energy storage module 130 during the peak power consumption period, thereby reducing the amount of electric energy that the equipment to be charged directly through the power grid during the peak power consumption period, thereby reducing the charging cost while reducing the burden on the power grid and improving the stability and safety of the power system operation.

[0071] In addition, when the power grid is disconnected from the charging and swapping station 100 (such as power grid failure, power outage, etc.), the energy storage module 130 can be put into the charging and swapping station as a backup power source to replace the power grid to transmit power to the charging pile 200, thereby improving the power swapping stability of the charging and swapping station.

[0072] In the above implementation process, by setting up the energy storage module 130, the energy storage module 130 can store electric energy, so that during the peak power consumption period, the energy storage module 130 can transmit electric energy to the charging pile 200, thereby reducing the amount of electricity that the equipment to be charged directly through the power grid during the peak power consumption period, while reducing the charging cost, it can also reduce the burden on the power grid and improve the stability and safety of the power system operation. In addition, when the power grid is disconnected from the charging and swapping station 100, the energy storage module 130 can also transmit electric energy to the charging pile 200, instead of the power grid transmitting electric energy to the charging pile 200, to improve the power swap stability of the swapping station.

[0073] In one possible implementation, Figure 4 As shown, there are multiple power distribution modules 120 , and each power distribution module 120 includes multiple switches 121 .

[0074] The switch 121 of each power distribution module 120 is respectively connected to a first preset number of energy storage modules 130 and a second preset number of charging piles 200 .

[0075] The switch 121 here is configured to be disconnected or connected according to the charging and swapping strategy to transmit the electric energy converted by the power module 110 to the energy storage module 130 connected to the switch 121 and / or the charging pile 200 connected to the switch 121. The energy storage module 130 is configured to transmit the electric energy in the energy storage module 130 to the charging pile 200 when the energy storage module 130 supplies power to the charging pile 200.

[0076] The first preset number mentioned above can be 1, 2, 5, 10, etc., and the second preset number can also be 1, 2, 5, 10, etc. The first preset number and the second preset number can be determined according to the actual situation of the charging station, and this application does not make any specific restrictions.

[0077] It can be understood that the first preset number of energy storage modules 130 and the second preset number of charging piles 200 connected to each power distribution module 120 may be the same ( Figure 4 ), or they may be different (not shown in the figure). For example, the switch 121 of the first power distribution module 120 connects 3 energy storage modules 130 and 5 charging piles 200, and the switch 121 of the second power distribution module 120 also connects 3 energy storage modules 130 and 5 charging piles 200. Or, the switch 121 of the first power distribution module 120 connects 3 energy storage modules 130 and 5 charging piles 200, and the switch 121 of the second power distribution module 120 connects 4 energy storage modules 130 and 4 charging piles 200. The number of energy storage modules 130 and charging piles 200 connected to each power distribution module 120 may be the same or different, and this application does not make any specific restrictions.

[0078] In some embodiments, if the power grid supplies power to both the charging pile 200 and the energy storage module 130, the switch 121 connected to the charging pile 200 connected to the device to be charged and the switch 121 connected to the energy storage module 130 are turned on, and the other switches 121 of the power distribution module 120 are turned off. At this time, the electric energy converted by the power module 110 is transmitted to the charging pile 200 connected to the device to be charged and the energy storage module 130.

[0079] If the grid only supplies power to the charging pile 200, the switch 121 connected to the charging pile 200 connected to the device to be charged is turned on, and the other switches 121 of the power distribution module 120 are turned off. At this time, the power converted by the power module 110 is transmitted to the charging pile 200 connected to the device to be charged.

[0080] If the energy storage module 130 supplies power to the charging pile 200, the switch 121 connected to the charging pile 200 connected to the device to be charged and the switch 121 connected to the energy storage module 130 are turned on, and the other switches 121 of the power distribution module 120 are turned off. At this time, the electric energy stored in the energy storage module 130 is transmitted to the charging pile 200 connected to the device to be charged through the power distribution module 120.

[0081] The above-mentioned charging and discharging mode of the charging and discharging station 100 is only exemplary. The charging and discharging mode of the charging and discharging station 100 can also be adjusted according to actual conditions, and this application does not make any specific restrictions.

[0082] In the above implementation process, by connecting the charging pile 200 and the energy storage module 130 in each power distribution module 120, when the energy storage module 130 is needed to power the charging pile 200, the energy storage module 130 connected to the same power distribution module 120 can directly power the charging pile 200. The electric energy in the energy storage module 130 does not need to be converted multiple times by the power module 110 before being transmitted to the charging pile 200, thereby improving the charging efficiency when the energy storage module 130 powers the charging pile 200, while reducing the consumption of electric energy during the transmission process and improving the quality of electric energy.

[0083] In one possible implementation, Figure 5 As shown, the power module 110 includes a bidirectional power module 111 .

[0084] Among them, one end of the bidirectional power module 111 is connected to the grid bus 300, and the other end of the bidirectional power module 111 is connected to one end of the power distribution module 120; the other end of the power distribution module 120 connected to the bidirectional power module 111 is connected to the energy storage module 130; or the other end of the power distribution module 120 connected to the bidirectional power module 111 is connected to the energy storage module 130 and the charging pile 200.

[0085] The bidirectional power module 111 here is configured to, when the power grid is used to supply power to the charging pile 200, convert the AC power of the grid bus 300 into DC power and transmit it to the energy storage module 130 through the power distribution module 120; and when the power grid is used to supply power to the charging pile 200, convert the DC power of the energy storage module 130 into AC power and transmit it to the grid bus 300.

[0086] It can be understood that when the other end of the power distribution module 120 connected to the bidirectional power module 111 is connected to the energy storage module 130, the electric energy stored in the energy storage module 130 connected to the other end of the power distribution module 120 connected to the bidirectional power module 111 is used for the charging pile 200 connected to the other power distribution module 120.

[0087] When the other end of the power distribution module 120 connected to the bidirectional power module 111 is connected to the energy storage module 130 and the charging pile 200, the electric energy stored in the energy storage module 130 connected to the other end of the power distribution module 120 connected to the bidirectional power module 111 is used for the charging pile 200 connected to the power distribution module 120 itself and the charging pile 200 connected to other power distribution modules 120.

[0088] The power modules 110 in the charging and swapping station 100 of the embodiment of the present application may all be bidirectional power modules 111, or some of the power modules 110 may be bidirectional power modules 111. The selection of the power modules 110 may be adjusted according to actual conditions, and the present application does not impose any specific restrictions.

[0089] In the above implementation process, by setting the power module 110 as a bidirectional power module 111, the bidirectional power module 111 can convert the AC power of the power grid into DC power and transmit it to the charging pile 200, i.e., the energy storage module 130, through the power distribution module 120, and can also convert the DC power stored in the energy storage module 130 into AC power and transmit it to the charging pile 200 connected to other power modules 110 through the bus grid. By setting the bidirectional power module 111, the electric energy of the energy storage module 130 connected to the bidirectional power module 111 can power the charging pile 200 connected to other power modules 110 in the charging and swapping station 100, thereby increasing the power supply range of the energy storage module 130 and improving the charging flexibility of the charging and swapping station 100 when using the energy storage module 130 for charging.

[0090] In a possible implementation, the power module 110 further includes a unidirectional power module 112 .

[0091] Among them, one end of the unidirectional power module 112 is connected to the grid bus 300, and the other end of the unidirectional power module 112 is connected to one end of the power distribution module 120; the other end of the power distribution module 120 connected to the unidirectional power module 112 is connected to the charging pile 200; or the other end of the power distribution module 120 connected to the unidirectional power module 112 is connected to the energy storage module 130 and the charging pile 200.

[0092] The unidirectional power module 112 here is configured to convert the alternating current of the grid bus 300 into direct current and transmit it to the energy storage module 130 through the power distribution module 120 .

[0093] It can be understood that when the other end of the power distribution module 120 connected to the unidirectional power module 112 is connected to the charging pile 200, and the energy storage module 130 is needed to power the charging pile 200, the charging pile 200 connected to the other end of the power distribution module 120 connected to the unidirectional power module 112 is powered by the energy storage module 130 connected to the other end of the power distribution module 120 connected to the bidirectional power module 111.

[0094] When the other end of the power distribution module 120 connected to the unidirectional power module 112 is connected to the energy storage module 130 and the charging pile 200, and the energy storage module 130 is needed to power the charging pile 200, the charging pile 200 connected to the other end of the power distribution module 120 connected to the unidirectional power module 112 is powered by the energy storage module 130 connected to the other end of the power distribution module 120 connected to the bidirectional power module 111 or the energy storage module 130 connected to the power distribution module 120 itself.

[0095] The power modules 110 in the charging and swapping station 100 of the embodiment of the present application may all be unidirectional power modules 112, or some of the power modules 110 may be unidirectional power modules 112. The selection of the power modules 110 may be adjusted according to actual conditions, and the present application does not impose any specific restrictions.

[0096] In the above implementation process, by setting part of the power modules 110 as unidirectional power modules 112, the bidirectional power modules 111 can only serve as a supplement to the unidirectional power modules 112. That is, when the energy storage module 130 connected to the unidirectional power module 112 does not provide enough electric energy for the charging pile 200 connected to the unidirectional power module 112, the energy storage module 130 connected to the bidirectional power module 111 will supply power to the charging pile 200 connected to the unidirectional power module 112. Therefore, the charging and swapping station 100 can also supply power to the charging pile 200 through the energy storage module 130 by setting fewer bidirectional power modules 111. Since the bidirectional power module 111 is more expensive than the unidirectional power module 112, the cost of the power module 110 in the charging and swapping station 100 can be reduced by setting some unidirectional power modules 112.

[0097] In one possible implementation, when the charging pile 200 is powered by the energy storage module 130, the energy storage module 130 transmits the stored electric energy to the bidirectional power module 111 through the power distribution module 120 connected to the energy storage module 130; the bidirectional power module 111 converts the electric energy and transmits it to the grid bus 300; the grid bus 300 transmits the electric energy to the power distribution module 120 connected to the unidirectional power module 112 through the unidirectional power module 112; the power distribution module 120 transmits the electric energy to the charging pile 200 connected to the power distribution module 120.

[0098] The above-mentioned method of the energy storage module 130 supplying power to the charging pile 200 is used for the energy storage module 130 connected to the bidirectional power module 111 to supply power to the charging pile 200 connected to the unidirectional power module 112 .

[0099] In the above implementation process, after the electric energy stored in the energy storage module 130 connected to the bidirectional power module 111 is converted into alternating current through the bidirectional power module 111, it can be transmitted to other unidirectional power modules 112 connected to the grid bus 300 through the grid bus 300. After the alternating current is converted into direct current through the unidirectional power module 112, it is transmitted to the charging pile 200 connected to the unidirectional power module 112, thereby completing the charging of the charging pile 200 connected to the unidirectional power module 112 by the energy storage module 130 connected to the bidirectional power module 111, thereby improving the power supply amount of the energy storage module 130 for the charging pile 200, and improving the power supply stability when the energy storage module 130 supplies power to the charging pile 200.

[0100] In one possible implementation, when the charging pile 200 is powered by the energy storage module 130 , the energy storage module 130 transmits the stored electric energy to the charging pile 200 connected to the same power distribution module 120 as the energy storage module 130 through the power distribution module 120 connected to the energy storage module 130 .

[0101] The above-mentioned energy storage module 130 supplies power to the charging pile 200 for the energy storage module 130 to supply power to the charging pile 200 connected to the same power module 110 as the energy storage module 130. The power module 110 here can be a unidirectional power module 112 or a bidirectional power module 111.

[0102] It can be understood that when the energy storage module 130 supplies power to the charging pile 200 connected to the same power module 110 as the energy storage module 130, the electric energy stored in the energy storage module 130 can be transmitted to the power distribution module 120, and the power distribution module 120 directly transmits the electric energy to the charging pile 200 connected thereto.

[0103] In the above implementation process, the charging pile 200 is directly powered by the energy storage module 130 connected to the same power distribution module 120. The electric energy in the energy storage module 130 does not need to be converted multiple times by the power module 110 before being transmitted to the charging pile 200, thereby improving the charging efficiency of the energy storage module 130 when powering the charging pile 200, while reducing the consumption of electric energy during the transmission process and improving the quality of electric energy.

[0104] In a possible implementation, the present application also provides a charging and swapping system, including: a charging pile 200 and the above-mentioned charging and swapping station 100.

[0105] Among them, the charging and swapping station 100 is connected to a plurality of charging piles 200 , and the charging and swapping station 100 is configured to supply power to the charging piles 200 ; the charging piles 200 are configured to charge the devices to be charged.

[0106] In the above implementation process, the charging and swapping station 100 is connected with the charging pile 200 to form a charging and swapping system. Since the charging and swapping station 100 is provided with a power module 110 and a power distribution module 120, the corresponding electric energy can be respectively distributed to different charging piles 200 through the cooperation of the power module 110 and the power distribution module 120. Therefore, the charging pile 200 does not need to be provided with a power module 110, which can reduce the cost investment of the power module 110 and the overall size of the charging pile 200, thereby reducing the occupied space of the charging and swapping system.

[0107] In a possible implementation, the charging pile 200 is connected to the charging and swapping station 100 in a plug-in manner.

[0108] Among them, the number of charging piles 200 is determined according to the operation and maintenance status of the charging and swapping system.

[0109] It can be understood that the plug-in connection between the charging pile 200 and the charging and swapping station 100 can meet the charging request of the larger demand of the charging and swapping system by inserting a corresponding number of charging piles 200 into the charging and swapping station 100 when the demand for charging piles 200 is large. When the plug-in connection between the charging pile 200 and the charging and swapping station 100 is small, the corresponding number of charging piles 200 can be unplugged from the charging and swapping station 100 to reduce the setting of idle charging piles 200 in the charging and swapping system and reduce costs.

[0110] The operation and maintenance status of the above-mentioned charging and swapping system can be obtained based on the operation and maintenance data statistics of the charging and swapping system over a period of time. For example, when it is found through operation and maintenance data statistics that the demand for battery pack replacement in the charging and swapping system is large and the demand for charging is small, the power distribution module 120 of the charging and swapping station 100 can be set to connect a larger number of energy storage modules 130 and a smaller number of charging piles 200. For another example, when it is found through operation and maintenance data statistics that the demand for charging in the charging and swapping system is large and queuing for charging often occurs, the number of charging piles 200 connected to the charging and swapping station 100 can be increased.

[0111] The period of time here can be one month, one quarter, one year, etc. The period of time can be adjusted according to actual conditions, and this application does not impose any specific restrictions.

[0112] In the above implementation process, by setting the charging pile 200 and the charging and swapping station 100 as a plug-in connection, the charging pile 200 can be easily removed and installed, and then the charging pile 200 can be reduced or added according to the operation and maintenance conditions, thereby improving the utilization rate of the charging pile 200 and reducing costs.

[0113] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0114] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A charging and swapping station, characterized in that: include: Power modules and power distribution modules; One end of the power module is connected to the power grid bus, and the other end of the power module is connected to one end of the power distribution module; The other end of the power distribution module is connected to a plurality of charging piles; Among them, multiple charging piles share the power distribution module; the power module is configured to perform AC and DC power conversion; and the power distribution module is configured to transmit the electric energy converted by the power module to the charging pile.

2. The charging and swapping station according to claim 1, characterized in that: The power distribution module includes a plurality of switches; Each switch of the power distribution module is respectively connected to one of the charging piles; The switch is configured to be disconnected or connected according to the charging and swapping strategy to transmit the electric energy converted by the power module to the charging pile connected to the switch.

3. The charging and swapping station according to claim 1 or 2, characterized in that: The charging and swapping station further includes: an energy storage module; The energy storage module is connected to an end of the power distribution module away from the power module; The power distribution module is configured to transmit the electric energy converted by the power module to the energy storage module; and the energy storage module is configured to store the electric energy transmitted by the power distribution module.

4. The charging and swapping station according to claim 3, characterized in that: There are multiple power distribution modules, and each of the power distribution modules includes multiple switches; The switch of each power distribution module is respectively connected to a first preset number of the energy storage modules and a second preset number of the charging piles, and the switch is configured to be disconnected or connected according to the charging and swapping strategy to transmit the electric energy converted by the power module to the energy storage module connected to the switch and / or the charging pile connected to the switch; The energy storage module is configured to transmit the electric energy in the energy storage module to the charging pile when the charging pile is powered by the energy storage module.

5. The charging and swapping station according to claim 3, characterized in that: The power module comprises a bidirectional power module; One end of the bidirectional power module is connected to the power grid bus, and the other end of the bidirectional power module is connected to one end of the power distribution module; The other end of the power distribution module connected to the bidirectional power module is connected to the energy storage module; or the other end of the power distribution module connected to the bidirectional power module is connected to the energy storage module and the charging pile; The bidirectional power module is configured to, when the charging pile is powered by the power grid, convert the AC power of the grid bus into DC power and transmit it to the energy storage module through the power distribution module; and when the charging pile is powered by the energy storage module, convert the DC power of the energy storage module into AC power and transmit it to the grid bus.

6. The charging and swapping station according to claim 5, characterized in that: The power module also includes a unidirectional power module; One end of the unidirectional power module is connected to the grid bus, and the other end of the unidirectional power module is connected to one end of the power distribution module; The other end of the power distribution module connected to the unidirectional power module is connected to the charging pile; or the other end of the power distribution module connected to the unidirectional power module is connected to the energy storage module and the charging pile; The unidirectional power module is configured to convert the alternating current of the grid bus into direct current and transmit it to the energy storage module through the power distribution module.

7. The charging and swapping station according to claim 6, characterized in that: When the energy storage module is used to supply power to the charging pile, the energy storage module transmits the stored electric energy to the bidirectional power module through the power distribution module connected to the energy storage module; The bidirectional power module converts the electric energy and transmits it to the power grid bus; The grid bus transmits the electric energy to the power distribution module connected to the unidirectional power module through the unidirectional power module; The power distribution module transmits the electric energy to a charging pile connected to the power distribution module.

8. The charging and swapping station according to claim 6, characterized in that: When the energy storage module is used to supply power to the charging pile, the energy storage module transmits the stored electric energy to the charging pile connected to the same power distribution module as the energy storage module through the power distribution module connected to the energy storage module.

9. A charging and swapping system, characterized in that: include: A charging pile and a charging and swapping station as claimed in any one of claims 1 to 8; The charging and swapping station is connected to a plurality of the charging piles, and the charging and swapping station is configured to supply power to the charging piles; The charging pile is configured to charge the device to be charged.

10. The charging and swapping system according to claim 9, characterized in that: The charging pile is plug-in connected to the charging and swapping station; Among them, the number of the charging piles is determined according to the operation and maintenance status of the charging and swapping system.

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