Charging power cabinet and charging system

Abstract

The utility model discloses a charging power cabinet and a charging system, the charging power cabinet is suitable for being connected with a plurality of charging terminals, the plurality of charging terminals at least comprise an overcharging terminal and the rest are fast charging terminals, the charging power cabinet comprises a power supply module, a power distribution module and a charging control module, the power distribution module comprises output buses and a plurality of switches, the number of the output buses is consistent with that of the power supply units in the power supply module, each fast charging terminal is connected with one output bus, and the output buses are fast charging buses; each overcharge terminal is connected with two output buses, and the two output buses are both overcharge buses; in addition, at least one disconnection bus is not connected with any charging terminal. According to the charging power cabinet, the power allocation capability of the overcharge terminal to the power supply unit can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging systems, in particular to a charging power cabinet and a charging system. Background Art

[0002] With the development of the new energy vehicle industry, the battery capacity and charging rate of existing electric vehicles are gradually increasing, and the required power consumption is also further increasing. Therefore, existing public charging piles are not only equipped with fast charging, but also with super charging with higher power. Previously, a high-power charging system generally only included fast charging terminals with relatively low power. When adjusting the power, multiple power supply units were centrally called to a single charging gun to expand the charging power of the single charging gun to meet the power consumption needs of the vehicle. In such a charging system, a full matrix and full ring topology structure is mostly used to achieve power allocation, which requires a large number of DC switches, resulting in high hardware costs. At the same time, there are many switching lines and complex control logics. Moreover, when this topology structure is applied to a charging station with both fast charging and super charging, there will be interference between the charging guns of fast charging and super charging when in use. And even if the charging module is idle, it cannot be called by the super charging terminal, so that the super charging terminal cannot allocate enough charging power, resulting in the inability to meet the charging needs of the corresponding vehicle. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned defects or problems in the background art, and provide a charging power cabinet and a charging system, which are suitable for realizing the convenient call of the super charging terminal to the idle power supply unit.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] Technical Solution 1: A charging power cabinet, which is suitable for connecting to multiple charging terminals, at least one of the multiple charging terminals is a supercharger terminal, and the rest are fast charger terminals; it includes: a power supply module, a power distribution module, and a charging control module; the power supply module includes multiple power supply units and is connected to the power distribution module; the power distribution module includes output buses and several switches that are the same in number as the power supply units; each output bus is correspondingly connected to each power supply unit, and the output bus is suitable for connecting to a charging terminal; the output buses are connected in series through a first switch to form a ring topology, and when the number of output buses is even, they are connected to another output bus that is in a diagonal relationship with it through a second switch; at the same time, a third switch is used to control the connection of the output bus to the corresponding charging terminal; the charging control module controls the opening and closing of each switch according to the power consumption request of the charging terminal to allocate the required power to the charging terminal; among them, each fast charger terminal is connected to one output bus, and this output bus is a fast charging bus; each supercharger terminal is connected to two output buses, and both of these output buses are supercharging buses; and among the output buses connected to any supercharging bus through the first switch or the second switch, at least one output bus is not connected to any charging terminal, and this output bus is a disconnected bus.

[0006] Technical Solution 2, which is based on Technical Solution 1: At least one of the disconnected buses has a sequence number adjacent to the sequence number of the corresponding supercharging bus to connect to this supercharging bus through the corresponding first switch.

[0007] Technical Solution 3, which is based on Technical Solution 2: Among all the output buses, those that are separated from any supercharging bus or disconnected bus by at least one first switch and are not connected through the second switch are all connected to any supercharging bus or disconnected bus through a fourth switch.

[0008] Technical Solution 4, which is based on Technical Solution 3: According to the sequence numbers of all the output buses, there are no other supercharging buses between the two supercharging buses connecting the same supercharger terminal, and these two supercharging buses have at least two other output buses when counting forward according to the sequence numbers.

[0009] Technical Solution 5, which is based on Technical Solution 4: In the power supply module, the number of power supply units is N, where N ≥ a + b * 4, a is the number of fast charger terminals, and b is the number of supercharger terminals.

[0010] Technical Solution 6, which is based on Technical Solution 5: The number of power supply units is 12, the number of charging terminals is 9, among which the number of supercharger terminals is 1, and the number of fast charger terminals is 8; in the sequence numbers of all the output buses, the sequence numbers of the supercharging buses are the 1st and the 5th, the sequence numbers of the disconnected buses are the 2nd and the 4th, and the fourth switch connects the output buses with sequence numbers 1 and 9.

[0011] In addition, the present utility model also provides Technical Solution Seven: A charging system, which includes: a plurality of charging terminals, at least including one ultra-fast charging terminal, and the rest are fast charging terminals; and an ultra-fast and fast charging dual-purpose charging power cabinet as described in any one of Technical Solutions One to Six, which is connected to each of the charging terminals.

[0012] Technical Solution Eight, which is based on Technical Solution Seven: Each charging terminal includes at least one charging gun. The charging guns include ultra-fast charging guns and fast charging guns according to different charging powers. The rated charging power of the ultra-fast charging gun is greater than that of the fast charging gun; the ultra-fast charging terminal only includes one ultra-fast charging gun, and the fast charging terminal includes at least one fast charging gun.

[0013] Technical Solution Nine, which is based on Technical Solution Eight: Each of the charging guns is provided with an identification unit. The identification unit is used to identify the required power of the device to be charged and transmit it to the charging control module for it to allocate the required power of the corresponding charging terminal.

[0014] From the above description of the present utility model, compared with the prior art, the present utility model has the following beneficial effects:

[0015] Technical Solution One provides a charging power cabinet, which is used to supply power to charging terminals. The charging terminals can include ultra-fast charging terminals and fast charging terminals. The power of the ultra-fast charging terminal is greater than that of the fast charging terminal, and it can provide a faster charging speed.

[0016] In this charging power cabinet, there are a power supply module, a power distribution module, and a charging control module; the power supply module includes a plurality of power supply units. The power supply units are connected to the power distribution module and then connected to the charging terminals through the power distribution module, so as to provide charging power for the charging terminals.

[0017] The power distribution module includes a number of output buses and switches. Each power supply unit is connected to one output bus and then connected to the charging terminals through the output bus; among them, according to the different types of connected charging terminals, the output buses are divided into ultra-fast charging buses and fast charging buses; corresponding to one ultra-fast charging terminal, two ultra-fast charging buses are connected; corresponding to one fast charging terminal, one fast charging bus is connected. In the case of no power allocation, each output bus will only charge the device to be charged with the output power of the power supply unit connected to itself; at the same time, a first switch is set between the output buses to form a ring topology, and a second switch is set to connect the power supply units at diagonal positions. The formed star-ring topology structure can allow each charging terminal to allocate the charging power of other idle power supply units during charging, realizing higher-power charging; and compared with the full-ring or full-rectangle topology structure, this topology structure reduces the number of switches, has a low hardware cost, a small number of switching lines, and reduces the complexity of the control logic.

[0018] Among the output buses directly connected to any one of the supercharging buses through the first switch or the second switch, at least one output bus is not connected to any one of the charging terminals, and this output bus is a disconnected bus. By setting the disconnected bus, the power of the corresponding power supply unit is not directly output to the charging terminal, but is provided for other charging terminals to use through power allocation. In this way, even when all charging terminals are occupied, there is still unused charging power of the power supply unit corresponding to the disconnected bus; at the same time, setting the disconnected bus to be directly connected to the supercharging bus through the first switch or the second switch can ensure that the output power of the disconnected bus can be quickly provided to the supercharging terminal nearby, thereby improving the power allocation ability of the supercharging terminal to the power supply unit and ensuring the high-power output of the supercharging terminal.

[0019] The charging control module can open and close all switches according to the pre-set power distribution rules, flexibly schedule each power supply unit, and the power allocation method is flexible and variable, and the charging process is stable and safe.

[0020] In Technical Solution 2, the disconnected bus is arranged adjacent to the supercharging bus to make full use of the first switch connected to the supercharging bus to realize the call of each power supply unit by the supercharging terminal, and enable the output power of the disconnected bus to be quickly provided to the supercharging terminal nearby, ensuring the high-power output of the supercharging terminal.

[0021] In Technical Solution 3, among all output buses, those that are separated from any supercharging bus or disconnected bus by at least one first switch and are not connected through the second switch are all connected to any supercharging bus or disconnected bus through the fourth switch. In the case where the fourth switch is not set, even if the corresponding charging terminals of some output buses are not occupied (that is, the corresponding power supply units are in an idle state), but because power needs to be allocated from other output buses to the output buses that are not directly connected to them through the first switch or the second switch, when the charging terminals corresponding to those other output buses are occupied, power cannot be allocated to the charging terminals corresponding to those non-directly connected output buses. Among them, the power allocation of the supercharging terminal needs to be preferentially satisfied. Therefore, the fourth switch is set to connect specific output buses to the supercharging bus or the disconnected bus. Since the disconnected bus has no directly connected charging terminals, it can be connected to the disconnected bus through the fourth switch, and the power can also be successfully allocated to the supercharging bus.

[0022] In this way, full matrix power switching of the ultra-fast charging terminal can be achieved. Its meaning is that as long as the charging terminal corresponding to any power supply unit is not occupied, then this idle power supply unit can be directly called to the ultra-fast charging terminal through the first switch, the second switch and the fourth switch. It should be noted that Technical Solution 3 simultaneously adopts the scheme of setting the disconnection bus and the fourth switch. The two work together to achieve full matrix power switching of the ultra-fast charging terminal, and will not cause too few fast charging terminals due to setting too many disconnection buses and thus make the charging power cabinet lack practical application value, nor will it increase too many fourth switches and raise the device cost.

[0023] In Technical Solution 4, according to the bit sequence of all output buses, there are no other ultra-fast charging buses between the two ultra-fast charging buses connecting the same ultra-fast charging terminal, and these two ultra-fast charging buses have at least two output buses according to the positive counting of the bit sequence. In this way, each ultra-fast charging bus can allocate the power of the two adjacent output buses nearby according to the bit sequence, ensuring that there is no mutual influence between ultra-fast charging buses when allocating power; at the same time, when both the ultra-fast charging terminal and some fast charging terminals are in use, the remaining power supply units that are not supplying power can, under permitted conditions, allocate the charging power to the ultra-fast charging terminal or fast charging terminal in use, avoiding interference between the ultra-fast charging terminal and the fast charging terminal and resulting in the ultra-fast charging not being able to allocate enough charging power.

[0024] Moreover, since Technical Solution 4 adopts the setting that there are at least two output buses between two ultra-fast charging buses, the first switches connected to these two ultra-fast charging buses can be connected to as many other output buses as possible without repetition. Therefore, the first switches connected to these two ultra-fast charging buses are utilized more efficiently. In this way, compared with the scheme where two ultra-fast charging buses are adjacent in bit sequence or there is only one output bus between the bit sequences, Technical Solution 4 can achieve full matrix power switching of the ultra-fast charging terminal with as few fourth switches as possible.

[0025] In Technical Solution 7, the charging system adopts the ultra-fast and fast charging dual-purpose charging power cabinet of the above technical solution, and can utilize this charging power cabinet to achieve balanced configuration of the ultra-fast charging terminal and the fast charging terminal and flexible allocation of the output power, so that the power of the available output buses can be smoothly allocated to the ultra-fast charging buses to meet the charging requirements of the device to be charged. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1Schematic diagram of the charging system provided in Embodiment 1 of the present utility model;

[0028] Figure 2 Schematic diagram of the charging system provided in Embodiment 2 of the present utility model;

[0029] Figure 3 Schematic diagram of the charging system provided in Embodiment 3 of the present utility model;

[0030] Figure 4 Schematic diagram of the charging system provided in Embodiment 4 of the present utility model.

[0031] Explanation of main reference numerals:

[0032] Charging terminal 1;

[0033] Power supply module 2; Power supply unit 21;

[0034] Power distribution module 3; Output bus 30; First switch 31; Second switch 32; Third switch 33; Fourth switch 34. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are the preferred embodiments of the present utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0036] In the claims, description, and the above-mentioned accompanying drawings of the present utility model, unless otherwise clearly defined, when using terms such as "first", "second", or "third", etc., they are all used to distinguish different objects and not for describing a specific order. In the claims, description, and the above-mentioned accompanying drawings of the present utility model, when using terms such as "comprising", "having", and their variants, the intention is to "include but not limited to". Embodiment 1:

[0037] Embodiment 1 of the present utility model provides a charging system, which includes a plurality of charging terminals 1 and a charging power cabinet.

[0038] In this charging system, at least one supercharging terminal is included in the plurality of charging terminals 1, and the rest are fast charging terminals. Each charging terminal 1 includes at least one charging gun. The charging guns include supercharging guns and fast charging guns according to different charging powers, and the rated charging power of the supercharging gun is greater than that of the fast charging gun. In the supercharging terminal, only one supercharging gun is included; in the fast charging terminal, at least one fast charging gun is included. An identification unit is provided in each charging gun, and the identification unit is used to identify the required power of the device to be charged and transmit it to the charging power cabinet for it to allocate the required charging power of the corresponding charging terminal 1.

[0039] Specifically, the difference between the ultra-fast charging terminal and the fast charging terminal lies in the different rated charging powers they can provide for the device to be charged. For example, the rated charging power that the fast charging terminal can provide is generally between 30kW and 100kW, while the rated charging power that the ultra-fast charging terminal can provide can be above 120kW. Through the ultra-fast charging terminal, a faster charging speed can be provided for the device to be charged that meets the requirements. Among them, in order to ensure the corresponding charging power, only one ultra-fast charging gun is set for the ultra-fast charging terminal; while in the fast charging terminal, due to the lower charging power, multiple fast charging guns can be set to charge more devices to be charged simultaneously.

[0040] Refer to Figure 1 , in Embodiment 1, a total of 9 charging terminals 1 are provided, including one ultra-fast charging terminal S1 and 8 fast charging terminals P1 to P8.

[0041] In this charging system, the dual-purpose ultra-fast and fast charging power cabinet is adapted to be connected to multiple charging terminals 1, and it includes a power supply module 2, a power distribution module 3, and a charging control module. Among them, the power supply module 2 includes multiple power supply units 21 and is connected to the power distribution module 3; the power distribution module 3 includes output buses 30 with the same number as the power supply units 21 and several switches; each output bus 30 is correspondingly connected to each power supply unit 21, and the output bus 30 is adapted to be connected to the charging terminal 1; the output buses 30 are connected in series through a first switch 31 to form a ring topology, and when the number of output buses 30 is even, it is connected to another output bus 30 with a diagonal relationship through a second switch 32; at the same time, the connection of the output bus 30 to the corresponding charging terminal 1 is controlled by a third switch 33; the charging control module controls the opening and closing of each switch according to the power consumption request of the charging terminal 1 to allocate the required power to the charging terminal 1; among them, each fast charging terminal is connected to an output bus 30, and this output bus 30 is a fast charging bus; each ultra-fast charging terminal is connected to two output buses 30, and both of these two output buses 30 are ultra-fast charging buses; and, according to the sequence of all output buses 30, there are no other ultra-fast charging buses between the two ultra-fast charging buses connected to the same ultra-fast charging terminal, and these two ultra-fast charging buses have at least two output buses 30 in positive counting according to the sequence, and these two output buses 30 are not connected to the ultra-fast charging terminal.

[0042] In the power supply module 2, the number of power supply units 21 is N, where N ≥ a + b * 4, a is the number of fast charging terminals, b is the number of ultra-fast charging terminals, and preferably, N is greater than or equal to 10. Refer to Figure 1 , in this embodiment, the power supply module 2 includes a total of 12 power supply units 21, namely M1 to M12, the rated power of each power supply unit 21 is 40kW, the total power of the power supply module 2 is 480kW, and each power supply unit 21 is connected to the power distribution module 3.

[0043] The power distribution module 3 includes 12 output buses 30, namely L1 to L12 respectively. One end of each output bus 30 is correspondingly connected to a power supply unit 21, and the other end is adapted to be connected to the charging terminal 1. Among them, for a fast charging terminal, one output bus 30 is connected; for a super charging terminal, two output buses 30 are connected.

[0044] The power distribution module 3 further includes several switches. Among them, a third switch 33 for connecting the corresponding power supply module 2 and the charging terminal 1 is arranged on each output bus 30. Through the third switch 33, the on-off of the charging path between the power supply module 2 and the corresponding charging terminal 1 can be controlled. In addition, a first switch 31 is also arranged between adjacent output buses 30. Through these first switches 31, each output bus 30 is connected in series to form a circuit structure with a ring topology. At the same time, when the number of output buses 30 is even, another output bus 30 with a diagonal relationship is also connected through the second switch 32. Here, the diagonal relationship refers to two output buses 30 with corresponding serial numbers in the ring topology circuit structure formed by these output buses 30. For example, in Figure 1 where the total number of power supply modules 2 is 12, M1 corresponds to M7, M2 corresponds to M8, and so on, so that all output buses 30 are also connected through the second switch 32. In the case of no power allocation, each output bus 30 will only charge the device to be charged with the output power of the power supply unit 21 connected thereto; at the same time, the first switch 31 is arranged between each output bus 30 to form a ring topology, and the second switch 32 is arranged to connect the power supply units 21 at the diagonal positions, forming a star-ring topology structure, which can allow each charging terminal 1 to allocate the charging power of other idle power supply units 21 during charging to achieve higher-power charging; and this topology structure reduces the number of switches compared with the full-ring or full-rectangle topology structure, has a low hardware cost, a small number of switching lines, and reduces the complexity of the control logic.

[0045] The charging control module can control the opening and closing of each switch according to the power consumption request recognized by the recognition unit on the charging terminal 1, so as to allocate the required power to the charging terminal 1.

[0046] It should be noted that when the present utility model describes the connection relationships between each output bus and each switch, each power supply unit and each charging terminal, the terms "connection", "direct connection", etc. used, unless otherwise specified, all refer to "direct connection", and do not include the connection method that reaches the indirect connection purpose by spanning multiple output buses.

[0047] In this embodiment, the output bus 30 connected to the fast charging terminal is the fast charging bus, such as Figure 1 L3, L4 to L12 in Figure 1L1 and L5 therein. Refer to Figure 1 , in this embodiment, there is only one supercharger terminal, and between the output buses 30 connected to this supercharger terminal, there is only one fast charging bus, and no other supercharging buses are provided. And in the case of positive counting according to the bit sequence, that is, the order of L1 to L12, there are also three output buses 30, namely L2, L3, and L4, between L1 and L5. In this way, each supercharging bus can allocate the power of the two adjacent output buses 30 nearby according to the bit sequence, ensuring that there is no mutual influence between the supercharging buses when allocating power; at the same time, when both the supercharger terminal and some fast charging terminals are in use, the remaining power supply units 21 that are not supplying power can, under permitted conditions, allocate the charging power to the supercharger terminal or fast charging terminal in use, avoiding interference between the supercharger terminal and the fast charging terminal that causes the supercharger to be unable to allocate sufficient charging power.

[0048] Further, among the two output buses 30 adjacent to any supercharging bus, at least one output bus 30 is not connected to any charging terminal 1, and this output bus 30 is a disconnected bus. Refer to Figure 1 , the two supercharging buses L1 and L5 are connected to the S1 supercharger terminal. The output bus 30 close to L1 is L2, and the output buses 30 close to L5 are L4 and L6. Select this output bus 30 of L4, and make both L2 and L4 not connected to any charging terminal 1, and at the same time make L3 connected to the fast charging terminal P1. Obviously, only the output bus 30 connected to the charging terminal 1 can directly charge the device to be charged through the power supply module 2. Since the disconnected bus is not connected to the charging terminal 1, it cannot directly charge the device to be charged, and can only be allocated to other output buses 30 through the first switch 31 and then output to the charging terminal 1 corresponding to these output buses 30. By setting the disconnected bus, the power of the corresponding power supply unit 21 is not directly output to the charging terminal 1, but is provided to other charging terminals 1 through the method of power allocation. In this way, even when all the charging terminals 1 are occupied, there is still the charging power of the power supply unit 21 corresponding to the disconnected bus that is not used; at the same time, setting the disconnected bus adjacent to the supercharging bus can ensure that the output power of the disconnected bus can be provided to the supercharger terminal nearby, ensuring the high-power output of the supercharger terminal. Of course, in other embodiments, if the number of power supply units is more and the required power of the supercharger terminal is higher, more disconnected buses can be set. On the contrary, fewer disconnected buses can also be set. And it is also feasible to configure the disconnected bus to be directly connected to the supercharging bus through the second switch 32 instead of the first switch 31. For example, when L1 and L5 are configured as supercharging buses, L7 and L11 can also be configured as disconnected buses.

[0049] In addition, among the switches included in the power distribution module 3, there is also a fourth switch 34. In the power distribution module 3, there is at least one fourth switch 34; among all the output buses 30, those that are separated from any supercharging bus or disconnection bus by at least one first switch 31 and are not connected through the second switch 32 are all connected to any supercharging bus or disconnection bus through the fourth switch 34. Refer to Figure 1 , in the schematic diagram of this charging power cabinet, there is a fourth switch 34, and the fourth switch 34 connects two output buses 30, namely L1 and L9. Among them, L1 is a supercharging bus connected to the supercharging terminal, and there are three first switches 31 between L9 and L5. At the same time, it is not connected to L1, L2, L4, and L5 through the second switch 32. Of course, L9 can also be connected to L2, L4, or L5 through the fourth switch 34, as long as the above requirements are met. In the case where the fourth switch 34 is not set, even if the corresponding charging terminal 1 of some output buses 30 is not occupied, due to the need to adjust the power through other output buses 30, when the charging terminals corresponding to these output buses 30 are occupied, power cannot be allocated to other required charging terminals 1. Among them, the power allocation of the supercharging terminal needs to be prioritized. Therefore, the fourth switch 34 is set to connect specific output buses 30 to the supercharging bus or disconnection bus. Since there is no directly connected charging terminal 1 on the disconnection bus, power can be smoothly allocated to the supercharging bus through the disconnection bus.

[0050] After receiving the power consumption request, the charging control module can control the opening and closing of the above-mentioned first switch 31, second switch 32, third switch 33, and fourth switch 34, and allocate the charging power of each power supply unit 21 to the corresponding charging terminal 1. Among them, the charging control module can include a processor and a memory. The memory stores a corresponding switch switching rule program, and the processor can control the switching of each switch according to this program. The charging control module and each charging terminal 1 can communicate through the CAN bus. The identification unit provided on the charging gun of the charging terminal 1 can also be a processor, which can identify and process the power consumption of the device to be charged connected to the charging gun, and send the information to the charging control module. The charging control module then controls the opening and closing of the corresponding switches according to the current usage situation of the entire charging power cabinet to allocate the output power of different charging modules.

[0051] Refer to Figure 1, when the two fast charging terminals P4 and P6 are charging the device to be charged, the two power supply units 21, M8 and M10, directly supply power to P4 and P6 by closing the corresponding third switches 33. At the same time, according to the power consumption requirements of the device to be charged connected to P4 and P6, for example, the power consumption requirement corresponding to P4 is 80 kW, and the power consumption requirement corresponding to P6 is 40 kW. At this time, P6 can be directly powered by M10 without allocation, while P4 needs to allocate an additional power supply unit 21 to meet the power consumption requirement. For example, if P3 is idle at this time, the first switch 31 between L7 and L8 can be directly closed, and the third switch 33 on L7 can be turned off, so as to allocate the power of M7 to L8.

[0052] If the supercharging terminal S1 is used by a newly entered device to be charged at this time, the two power supply units 21, M1 and M5, supply power to S1 by closing the corresponding third switches 33. Of course, the two combinations of M1 and M2, or M4 and M5 can also be used. At the same time, if the power consumption requirement corresponding to S1 is 160 kW at this time, the first switches 31 between L1 and L2 and between L4 and L5 can be closed to provide sufficient output power for S1.

[0053] Furthermore, if all of the fast charging terminals P2 to P4 and P6 to P8 are occupied at this time, or the power of the corresponding power supply units 21 is allocated to other fast charging terminals, and the power consumption requirement of S1 increases to 200 kW, the fourth switch 34 between L1 and L9 can be closed to directly allocate the power of M9 to L1 to meet the power consumption requirement of S1.

[0054] It should be noted that when a certain output bus 30 hopes to call a certain idle power supply unit 21, if it can be directly connected to the output bus corresponding to the power supply unit 21 through the first switch 31, the second switch 32 or the fourth switch 34, the speed of power switching is relatively fast; this is because, at this time, as long as the output voltages of the power supply units corresponding to the two directly connected output buses are ensured to be approximately equal, and then the voltages of the two output buses are ensured to be approximately equal, so that the voltages on both sides of the corresponding switch are approximately equal, the corresponding switch can be closed.

[0055] If the power supply units corresponding to the output buses 30 that are not directly connected are to be called, it will cause the problem of slow power switching speed. This is because in addition to these two non-directly connected output buses, it is also necessary to ensure that the voltages of at least one other output bus located between them are also approximately equal to close the corresponding switch between them. Therefore, it is inevitably necessary to modulate the output voltages of more power supply units; and the power supply unit 21 is a switching power supply, and the modulation process of its output voltage requires a certain amount of time, thus resulting in the slow power switching speed and the complex switching logic in this case.

[0056] Therefore, in the aforementioned switch switching rule program, it is usually still preferred to select the first switch 31, the second switch 32, or the fourth switch 34 connected to the output bus 30 to call the corresponding power supply unit on the directly connected output bus, so as to achieve faster power switching. On this basis, if the power demand still cannot be met, then the power supply unit corresponding to other non-directly connected output buses will be considered for calling.

[0057] Embodiment 2:

[0058] The charging system provided by Embodiment 2 of the present utility model is different from that of Embodiment 1 in that there are differences in the circuit layout of the super-fast charging and fast charging dual-purpose charging power cabinet.

[0059] Referring to Figure 2 , the output buses 30 connected to S1 as the super-fast charging terminal are L1 and L4, and L2 and L3 are disconnected buses, and the two are not connected to the charging terminal 1. At the same time, in this circuit layout situation, there are two output buses 30, L6 and L11, with a first switch 31 spaced between any super-fast charging bus or disconnected bus, and not connected through the second switch 32. Therefore, L6 is connected to L1 through the fourth switch 34, and L11 is connected to L4 through the fourth switch 34. When this charging power cabinet is in use, if S1 is in use and the power demand is large, and the powers of M5, M7 to M10, and M12 are all allocated, the power of M6 and M11 can be allocated to S1 by closing the fourth switches 34 between L1 and L6 and between L4 and L11.

[0060] Of course, it can also be seen that compared with Embodiment 1, Embodiment 2 needs to add one more fourth switch 34, and the cost has increased. In Embodiment 1, since the two disconnected buses L2 and L4 are not adjacent, but there is an output bus L3, the efficient utilization of the first switch 31 connected to the disconnected bus is realized, thereby reducing the use of the fourth switch 34; in addition, as long as the disconnected bus L2 or L4 is not used by the super-fast charging terminal S1, then the corresponding power supply units M2 and M4 can be connected to the fast charging bus L3 through the corresponding first switch 31 to be quickly called by the fast charging terminal P1, or can be quickly called by the fast charging terminals P4 and P6 through the corresponding second switch 32 respectively.

[0061] In Embodiment 2, since the two disconnected buses L2 and L3 are adjacent to each other, the first switch 31 therebetween can only be used for power switching of the ultra-fast charging terminal and cannot be used for power switching of the fast charging terminal. The first switch 31 is not efficiently reused, so that the two power supply units 21, M2 and M3, can only be quickly called by the fast charging terminals P4 or P5 through the corresponding second switches 32 respectively. Once the ultra-fast charging terminal S1 is not in use, the defect of Embodiment 2 will appear: when there are fewer fast charging vehicles to be charged, the speed of power switching is reduced and the complexity of switching is increased; when there are more fast charging vehicles to be charged, the power supply units M2 and M3 cannot even be called, directly reducing the ability of the power supply units M2 and M3 to be called by the fast charging terminals, and the flexibility is poor.

[0062] Embodiment 3:

[0063] The charging system provided by Embodiment 2 of the present utility model is different from that of Embodiment 1 in that there are differences in the circuit layout of the ultra-fast and fast charging dual-purpose charging power cabinet.

[0064] Referring to Figure 2 , the output buses 30 connected to S1 as the ultra-fast charging terminal are L1 and L4, and L2 and L5 are disconnected buses and are not connected to the charging terminal 1. At the same time, in this circuit layout, there is an output bus 30, L9, with a first switch 31 spaced between any ultra-fast charging bus or disconnected bus and not connected through the second switch 32. Therefore, L9 is connected to L1 through the fourth switch 34. When the charging power cabinet is in use, if S1 is in use and the power demand is large, and the powers of M3, M6 to M8, and M10 to M12 are all allocated, the power of M9 can be allocated to S1 by closing the fourth switch 34 between L1 and L9.

[0065] It can be seen that although Embodiment 3 is the same as Embodiment 2 in using L1 and L4 as the ultra-fast charging buses, since its disconnected buses L2 and L5 are not adjacent, the defect of Embodiment 2 does not exist. In addition, compared with the solutions using L1 and L2, or L1 and L3 as the ultra-fast charging buses, even if the two comparison solutions are both provided with disconnected buses and fourth switches according to the foregoing embodiments, Embodiments 1-3 also have the advantage of using fewer fourth switches in the same situation.

[0066] Embodiment 4:

[0067] The charging system provided by Embodiment 2 of the present utility model is different from that of Embodiment 1 in that there are differences in the circuit layout of the ultra-fast and fast charging dual-purpose charging power cabinet.

[0068] In the charging power cabinet provided by the present utility model, two supercharging buses connected to the same supercharging terminal are taken as a group. When the power distribution module 3 includes multiple groups of supercharging buses, each supercharging bus is at least connected to a fourth switch 34.

[0069] Specifically, referring to Figure 4 , in Embodiment 4, the number of power supply units 21 is 16, namely M1 to M16, and the output power of each power supply unit 21 is 40kW, so the total output power is 640kW. Among them, two supercharging terminals are provided, namely S1 and S2. S1 is connected to L1 and L4, S2 is connected to L9 and L12. L2 and L3 are disconnection buses close to S1, and L10 and L11 are disconnection buses close to S2. At this time, in this circuit layout, there are four output buses 30, namely L6, L7, L14, and L15, which are separated from any supercharging bus or disconnection bus by a first switch 31 and are not connected through a second switch 32. Therefore, L6 is connected to L1 through the fourth switch 34, L7 is connected to L4 through the fourth switch 34, L14 is connected to L9 through the fourth switch 34, and L15 is connected to L12 through the fourth switch 34. When S1 and S2 are in use, M6, M7, M14, and M15 can be allocated to the corresponding supercharging terminals through the fourth switch 34.

[0070] The above description of the specification and embodiments is used to explain the protection scope of the present utility model, but does not constitute a limitation on the protection scope of the present utility model. Through the inspiration of the present utility model or the above embodiments, those of ordinary skill in the art, combined with common general knowledge, ordinary technical knowledge in the art, and / or the prior art, can obtain modifications, equivalent replacements, or other improvements to the embodiments of the present utility model or some of its technical features through logical analysis, reasoning, or limited experiments, which should all be included within the protection scope of the present utility model.

Claims

1. A charging power cabinet, which is suitable for connecting to a plurality of charging terminals (1), wherein the plurality of charging terminals (1) include at least one supercharging terminal and the rest are fast charging terminals; Its characteristics are: include: A power supply module (2), a power distribution module (3) and a charging control module; The power supply module (2) comprises a plurality of power supply units (21) and is connected to the power distribution module (3); The power distribution module (3) comprises output buses (30) and a plurality of switches, the number of which is the same as the number of the power supply units (21); each output bus (30) is connected to each power supply unit (21) and the output bus (30) is suitable for connecting to a charging terminal (1); the output buses (30) are connected in series through a first switch (31) to form a ring topology, and when the number of the output buses (30) is an even number, another output bus (30) diagonally connected to the output bus (30) is connected through a second switch (32); at the same time, the output bus (30) is controlled to connect to the corresponding charging terminal (1) through a third switch (33); The charging control module controls the opening and closing of each switch according to the power consumption request of the charging terminal (1) so as to allocate the required power to the charging terminal (1); in, Each of the fast charging terminals is connected to an output bus (30), and the output bus (30) is a fast charging bus; each of the super charging terminals is connected to two output buses (30), and the two output buses (30) are super charging buses; and, of the two output buses (30) connected to any of the super charging buses via the first switch (31) or the second switch (32), at least one of the output buses (30) is not connected to any of the charging terminals (1), and the output bus (30) is a disconnected bus.

2. A charging power cabinet as claimed in claim 1, characterized in that: There is at least one disconnect bus whose bit sequence is adjacent to the bit sequence of the corresponding supercharging bus, so as to connect the supercharging bus through the corresponding first switch (31).

3. A charging power cabinet as claimed in claim 2, characterized in that: All output buses (30) that are separated from any supercharge bus or disconnection bus by at least one first switch (31) and are not connected via a second switch (32) are connected to any supercharge bus or disconnection bus via a fourth switch (34).

4. A charging power cabinet as claimed in claim 3, characterized in that: According to the bit sequence of all output buses (30), no other supercharging bus is included between two supercharging buses connected to the same supercharging terminal, and the two supercharging buses have at least two output buses (30) according to the bit sequence counted in a positive direction.

5. A charging power cabinet as claimed in claim 4, characterized in that: In the power supply module (2), the number of power supply units (21) is N, where N≥a+b*4, a is the number of fast charging terminals, and b is the number of super charging terminals.

6. A charging power cabinet as claimed in claim 5, characterized in that: The number of the power supply units (21) is 12, the number of the charging terminals (1) is 9, of which the number of supercharging terminals is 1 and the number of fast charging terminals is 8; in the bit sequence of all output buses (30), the bit sequence of the supercharging bus is 1st and 5th, the bit sequence of the disconnection bus is 2nd and 4th, and the fourth switch (34) connects the output buses (30) with the bit sequence of 1st and 9th.

7. A charging system, characterized in that it comprises: A plurality of charging terminals (1), including at least one supercharging terminal and the rest being fast charging terminals; and The supercharging and fast charging dual-purpose charging power cabinet as described in any one of claims 1 to 6 is connected to each of the charging terminals (1).

8. A charging system as claimed in claim 7, characterized in that: Each charging terminal (1) includes at least one charging gun, and the charging guns include supercharging guns and fast charging guns according to different charging powers, and the rated charging power of the supercharging gun is greater than that of the fast charging gun; the supercharging terminal includes only one supercharging gun, and the fast charging terminal includes at least one fast charging gun.

9. A charging system as claimed in claim 8, characterized in that: Each of the charging guns is provided with an identification unit, which is used to identify the power required by the device to be charged and transmit it to the charging control module so that it can be matched with the power required by the corresponding charging terminal (1).

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