Charging device, charging stack and charging system

Abstract

The present application provides a charging device, a charging stack and a charging system. The charging device includes multiple power modules, a switch module, a first charging port and a second charging port; each of the multiple power modules is obtained based on an integer number of power units, wherein at least two power modules have different powers; the maximum output power of the second charging port is greater than the maximum output power of the first charging port; the switch module is used to provide the output power of at least two power modules among the multiple power modules to the first charging port, and to provide the output power of two or more power modules with different powers among the multiple power modules to the second charging port, and the two or more power modules are connected to the two charging port bus bars of the second charging port and any one power module is connected to one of the two charging port bus bars. The present application can output different powers through different charging ports to meet different charging needs, reduce the number of switches, and improve the utilization rate of switches.

Description

Technical Field

[0001] The present application relates to the field of power electronics technology, and in particular to a charging device, a charging stack and a charging system. Background Art

[0002] With the continuous increase in the number of electric vehicles, the endurance and charging process of electric vehicles have gradually become the core issues of concern to the electric vehicle industry. There are many different ways to charge electric vehicles, including fast charging, slow charging, wireless charging, wired charging, etc. Specifically, electric vehicles can be charged using charging piles, battery swap stations and other devices. The power module (including the power conversion unit) in the traditional charging pile provides a fixed charging power for electric vehicles. This type of charging pile has a slow charging speed and low utilization rate, and cannot meet the various charging power requirements of electric vehicles. The charging pile is an innovative charging device that can bring together multiple power modules in the charging station, dynamically allocate the power modules according to the actual charging power required by the electric vehicle, and charge multiple electric vehicles simultaneously through multiple charging ports. The charging pile can improve the charging power and charging flexibility. The multiple power modules and multiple charging ports in the charging pile are interconnected through multiple switching switches. Controlling the conduction or disconnection of the switching switch can realize the power of some power modules to the corresponding charging port.

[0003] The inventor of the present application has found in the process of research and practice that there is currently a full-matrix charging stack, which includes multiple charging ports and multiple power modules, and each charging port is connected to each power module through multiple switches. This full-matrix charging stack can output electric energy of different powers through multiple charging ports to meet the charging needs of different electric vehicles, but requires a large number of switches and has a low switch utilization rate. Summary of the invention

[0004] The present application provides a charging device, a charging stack and a charging system. The charging device can provide different powers through different charging ports to meet the charging requirements of different electric vehicles, reduce the number of switches, and improve the utilization rate of switches.

[0005] In the first aspect, the present application provides a charging device, comprising: a plurality of power modules, a switch module, a first charging port and a second charging port; at least two of the plurality of power modules have different powers, and each of the plurality of power modules is obtained based on an integer number of power units; the maximum output power of the second charging port is greater than the maximum output power of the first charging port; the second charging port has two charging port buses; the switch module is used to provide the output power of at least two of the plurality of power modules to the first charging port, and to provide the output power of two or more of the plurality of power modules to the second charging port; at least two of the two or more power modules have different powers, and the two or more power modules are connected to the two charging port buses of the second charging port, and any one of the two or more power modules is connected to one of the two charging port buses. Wherein, the first charging port and the second charging port are both charging ports for outputting power to charge a device to be charged (such as an electric vehicle), and each charging port may correspond to a charging device (such as a charging gun) directly connected to the device to be charged. Each of the multiple power modules has an output bus, and the power output by the power module through its output bus can be fixed, wherein at least two power modules have different powers. Each power module can be obtained based on an integer number of power units. Then the power of each power unit can be an integer multiple of the power unit. For example, assuming that the power of the power unit is 40kw, the powers of the multiple power modules can be 40kw, 80kw, 120kw, etc., respectively, and this application is not limited. The maximum output power of the charging port is equal to the sum of the powers of all power modules connected to the charging port. In the present application, the first charging port can have a charging port bus. The second charging port can have two charging port buses. Different power modules can be connected to the second charging port through the two charging port buses of the second charging port to form two parallel connections to provide power to the second charging port.

[0006] In the present application, by providing power to the device to be charged through the first charging port and the second charging port with different maximum output powers, different charging modes can be provided to meet various charging requirements of different cars. Among the multiple power modules, at least two power modules have different powers, and each power module is obtained based on an integer number of power units, that is, the power of each power module is an integer multiple of the power of the power unit. After combining these power modules, power output is provided for the first charging port and the second charging port, which can realize flexible distribution of charging power, and make the number of switches connected when the second charging port reaches the required maximum output power less, which can improve the switch utilization rate.

[0007] In a feasible implementation, the multiple power modules include x first power modules and y second power modules, the power of the second power module is greater than the power of the first power module, x is a positive even number, and y is a positive integer; the switch module includes a first switch and a second switch, the first switch is used to connect the output bus of the first power module with the first charging port or the second charging port, and the second switch is used to connect the output bus of the second power module with the first charging port or the second charging port. In the present application, the switch module can provide the electric energy of the first power module and the second power module to each charging port through multiple first switches and second switches, respectively, to realize the sharing of power modules, which can improve the switch utilization rate and the charging utilization rate.

[0008] In a feasible implementation, the switches connected to the first charging port include m first switches and n second switches. The first charging port is connected to the m first power modules through the m first switches, and is connected to the n second power modules through the n second switches; m is a positive even number less than or equal to x, and n is an integer less than or equal to y. The maximum output power of the first charging port is less than the sum of the powers of the x first power modules and the y second power modules. In the present application, the first charging port can obtain the powers of the corresponding number of first power modules and second power modules respectively through the m first switches and n second switches connected thereto. Controlling these switches to turn on or off can output different powers, realize flexible distribution of charging power, meet the charging needs of different electric vehicles, and have high charging flexibility and adaptability.

[0009] In a feasible embodiment, the charging device includes at least two charging modules, each charging module includes the x first power modules and the y second power modules; the first charging port is connected to at least two first power modules in any one of the at least two charging modules through the switch module, and the second charging port is connected to at least two first power modules and at least two second power modules in the at least two charging modules through the switch module; wherein the maximum output power of the first charging port is less than the power of one of the charging modules, and the maximum output power of the second charging port is greater than the power of one of the charging modules. In the present application, the power modules in two of the multiple charging modules in the charging device provide electrical energy to the second charging port together, and a larger charging power can be output through the second charging port, providing a variety of different charging methods, with high charging flexibility, and can improve charging utilization. In addition, since the multiple charging modules have the same structure, the difficulty of assembling the device can be reduced.

[0010] In a feasible implementation, the maximum output power of the second charging port is less than or equal to the sum of the powers of the two charging modules; the at least two charging modules include two target charging modules, and the switches connected to the second charging port include 2u first switches and 2v second switches, wherein u is a positive even number less than or equal to x, and v is a positive integer less than or equal to y; the second charging port is connected to the u first power modules included in each of the two target charging modules through the 2u first switches, and is connected to the v second power modules included in each of the two target charging modules through the 2v second switches. The power of a charging module is equal to the sum of the powers of the multiple power modules included in the charging module. In the present application, the second charging port obtains electrical energy from the two charging modules to achieve a larger power output. This connection method requires a small number of switches, which can save the number of switches and improve the switch utilization rate.

[0011] In a feasible implementation, the switch module further includes a third switch, and the third switch is used to connect the second charging port and the output busbar of the power module included in two of the at least two charging modules; the switch connected to the second charging port further includes one of the third switches, and the second charging port is also connected to the two target charging modules through the third switch. In the present application, the third switch can be used to control whether the power of the power module of a charging module is provided to the second charging port, so that the number of switches can be reduced while the second charging port achieves a larger power output, and the charging flexibility can be improved.

[0012] In a feasible implementation, the at least two charging modules include three charging modules, the charging device includes two second charging ports, the switch module includes two third switches, and one of the two second charging ports is connected to two of the three charging modules via one third switch. In the present application, by controlling the on or off of the two third switches, the charging module (also referred to as the second charging module) located in the middle of the three charging modules can be combined with the first charging module, or with the third charging module, to provide power to the second charging port corresponding to the first charging module or the second charging port corresponding to the third charging module, thereby improving the degree of sharing of the power module and reducing the number of switches.

[0013] In a feasible implementation, the above-mentioned multiple power modules also include z third power modules, where z is a positive integer; the power of the above-mentioned third power module is greater than the power of the above-mentioned second power module; the above-mentioned second charging port is also connected to at least two first power modules, at least one second power module and at least one third power module among the above-mentioned multiple power modules. Among them, the second power module and the first power module are both obtained based on an integer number of power units, and the third power module is also obtained based on an integer number of power units. For example, the power of the first power module, the power of the second power module, and the power of the third power module may be 1 times, 2 times, and 3 times the power of the power unit, respectively. When the power of the power unit is 40kw, the power of the third power module may be 120kw. In the present application, by combining more power modules with different powers, greater power can be provided to the second charging port, so that the number of switches that need to be connected when the second charging port obtains a larger output power is reduced, thereby reducing the number of switches.

[0014] In a feasible implementation, the charging device further includes a third charging port, the maximum output power of the third charging port is greater than the maximum output power of the first charging port, and less than the maximum output power of the second charging port; the third charging port is connected to at least two power modules through a switch module, and the at least two power modules include at least two types of power modules among the first power module, the second power module and the third power module. That is to say, the maximum output power of the third charging port is between the maximum output power of the first charging port and the maximum output power of the second charging port. For example, when the first charging port provides 160kw "fast charging" and the second charging port provides 480kw "super charging", the third charging port can provide 200kw "fast charging". In the present application, the charging device can output different powers to charge electric vehicles through more types of charging ports, which can meet the charging needs of different electric vehicles, be compatible with multiple charging methods, have high charging flexibility and adaptability, and improve charging utilization.

[0015] In a feasible implementation, the switch module further includes a fourth switch, which is used to connect the output bus of the third power module with the second charging port or the third charging port, and the maximum output power of the third charging port is less than the sum of the powers of the x first power modules and the z third power modules; the switch connected to the third charging port includes s first switches and t fourth switches, and the third charging port is connected to the s first power modules through the s first switches, and to the t third power modules through the t fourth switches; the s is an even number greater than 1 and less than or equal to the x, and the t is an integer less than or equal to the z. In the present application, the first power module, the third power module and the third charging port are connected by multiple first switches and fourth switches. Since the power of the third power module is greater than the power of the first power module and the second power module, the number of switches is reduced while ensuring flexible power distribution. In addition, the power modules connected to the third charging port and the first charging port are as different as possible, which can reduce the mutual influence on the charging experience of the electric vehicles connected to them respectively, and can charge multiple electric vehicles at the same time.

[0016] In a feasible implementation, the maximum output power of the second charging port is greater than or equal to the sum of the powers of the x first power modules and the y second power modules; the switches connected to the second charging port include u first switches, v second switches and w fourth switches, the second charging port is connected to the u first power modules through the u first switches, the v second power modules through the v second switches, and the w third power modules through the w fourth switches; the u is an even number greater than 1 and less than or equal to the x, the v is an integer greater than or equal to 1 and less than or equal to the y, and the w is an integer less than or equal to the z. In the present application, the second charging port obtains electrical energy from the three power modules with different powers included in the charging device, and a larger power output can be achieved with fewer switches, which can improve the switch utilization, reduce the circuit cost, and reduce the system failure rate. In addition, the second charging port is connected to multiple types of power modules as much as possible, which can improve the reliability of the charging device and improve the charging flexibility.

[0017] In the second aspect, the present application further provides a charging stack, which includes a charging gun and a charging device provided in the first aspect and any possible implementation method of the first aspect, and the charging gun connects the charging device to the device to be charged. In the present application, the charging device provided based on the first aspect can provide different powers through different charging ports to meet the charging needs of different electric vehicles, and can reduce the number of switches and improve the utilization rate of switches while achieving flexible power distribution.

[0018] In the third aspect, the present application further provides a charging system, which includes a device to be charged and a charging stack provided in the second aspect, and the device to be charged is connected to the charging stack. In the present application, the charging device provided based on the first aspect can provide different powers through different charging ports to meet the charging needs of different electric vehicles, and can reduce the number of switches and improve switch utilization while achieving flexible power distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a structural diagram of a charging device;

[0020] Figure 2 A schematic diagram of an application scenario of the charging device provided in this application;

[0021] Figure 3 A schematic diagram of the structure of the charging device provided in this application;

[0022] Figure 4 Another structural schematic diagram of the charging device provided in this application;

[0023] Figure 5 Another structural schematic diagram of the charging device provided in this application;

[0024] Figure 6 Another structural schematic diagram of the charging device provided in this application;

[0025] Figure 7 Another structural schematic diagram of the charging device provided in this application;

[0026] Figure 8 Another structural schematic diagram of the charging device provided in this application;

[0027] Fig. 9 Another structural schematic diagram of the charging device provided in this application;

[0028] Fig.10 Another structural schematic diagram of the charging device provided in this application;

[0029] Fig.11 Another structural schematic diagram of the charging device provided in this application;

[0030] Fig.12 Another structural schematic diagram of the charging device provided in this application;

[0031] Fig.13 Another structural schematic diagram of the charging device provided in this application;

[0032] Fig.14 This is another structural schematic diagram of the charging device provided in this application. DETAILED DESCRIPTION

[0033] In order to solve the problem of high-power charging and long driving range of electric vehicles, the electric vehicle industry can use innovative charging equipment such as charging piles to charge electric vehicles. The charging pile can bring together multiple power modules (including power conversion units), dynamically allocate power modules according to the actual charging power required by the electric vehicle, and charge multiple electric vehicles at the same time through multiple charging ports, thereby improving charging power and charging flexibility. In other words, when the number of power modules included in the charging pile is limited, multiple electric vehicles can be charged simultaneously by sharing power modules and dynamically allocating algorithms to provide power output to multiple charging ports. See Figure 1 , Figure 1 is the structural diagram of the charging device. Figure 1 As shown, Figure 1 The three different charging architectures can all share power modules, and the power provided by these power modules can be output through multiple charging ports to achieve simultaneous charging of multiple electric vehicles. Specifically, multiple power modules and multiple charging ports in the charging stack are connected by a matrix switch module composed of multiple switches (also called switching switches or switching switches). The switch module structures included in various types of charging stacks are different. At present, there is a full-matrix charging stack, which includes multiple charging ports and multiple power modules, and each charging port is connected to each power module through multiple switches. This full-matrix charging stack can output electric energy of different powers through multiple charging ports, but a large number of switches are required, and the switch utilization rate is low.

[0034] The present application provides a charging device, which provides power to a device to be charged through a first charging port and a second charging port with different maximum output powers, and can provide different charging modes to meet various charging needs of different cars. Among the multiple power modules, at least two power modules have different powers, and each power module is obtained based on an integer number of power units, that is, the power of each power module is an integer multiple of the power of the power unit. After combining these power modules, power output is provided for the first charging port and the second charging port, which can realize flexible distribution of charging power and make the number of switches connected when the second charging port reaches the required maximum output power less, which can improve the switch utilization rate. Different charging ports can be connected to various shared power modules, which can improve the switch utilization rate, thereby saving costs and reducing the failure rate of the charging device.

[0035] See also Figure 2 , Figure 2 This is a schematic diagram of an application scenario of the charging device provided in this application. Figure 2As shown, the charging device can be applied to split non-on-board chargers, charging piles, etc., for charging electric vehicles waiting for charging equipment. The charging device may include a charging pile body (also called a charging host) and a charging column (also called a charging terminal). It is understandable that the charging pile body mentioned in this application may refer to a charging pile in a narrow sense, and the charging device composed of a charging pile body, a charging column, etc. may belong to a charging pile in a broad sense. Specifically, the charging pile body may be a structure for placing all power conversion units and various distribution units, and the charging column may be a structure for connecting and placing charging guns around parking spaces, and for payment display. The charging pile body is connected to the power supply and the charging column respectively, and the charging column is connected to the electric vehicle through a charging gun and other equipment. Among them, the power supply may include a public power grid, an energy storage battery, etc., and the electric energy in the energy storage battery may be obtained by converting the electric energy provided by the public power grid by an energy storage converter (Power Control System, PCS), and the electric energy provided by the above power supply to the charging pile body may be DC power or AC power. The charging pile body includes a main controller, multiple power conversion units and a switch module (also called a switching matrix), and the charging column includes a charging port and a sub-controller. Each charging port can correspond to a charging gun to provide power to an electric vehicle in a parking space. The above-mentioned multiple power conversion units may include a direct current (DC) / DC conversion unit (in Figure 2-Figure 14 DC / DC) and alternating current (AC) / DC conversion unit ( Figure 2The power conversion unit in the charging pile body can be used to convert the electric energy input by the power supply to obtain the electric energy corresponding to the power of the power conversion unit. The switch module in the charging pile body combines the electric energy output by some or all of the power conversion units in the charging pile body and outputs it to the charging column based on the control of the main controller. The charging column is used to provide the electric energy output by the charging pile body to the electric vehicle through the charging port and the charging gun to meet the charging needs of the electric vehicle. The sub-controller in the charging column can obtain the charging demand of the electric vehicle and transmit it to the main controller in the charging pile body. The main controller controls the working state (on or off) of each switch device in the switch module based on the charging demand to schedule the electric energy output by multiple power conversion units and dynamically allocate it to each charging port. Among them, the switch module in the charging pile body and the main controller can communicate through the controller area network (CAN) bus, and the communication method between the main controller in the charging pile body and the charging column can be Fast Ethernet (FE) communication, or other communication methods can be used, which is not limited by this application. It can be understood that the charging stack body can also include multiple switching control boards, one switching control board is used to control the conduction or disconnection of a switch in the switch module, and the multiple switching control boards can exchange information with the main controller in the charging stack body and the sub-controllers in the charging column, and control the switches in the switch module based on the control of the main controller in the charging stack body.

[0036] In such Figure 2 In the application scenario shown, the working principle of the charging device is as follows: (1) The sub-controller in the charging column obtains the charging information of the electric vehicle connected to the charging gun corresponding to the charging column, and reports it to the main controller in the charging pile body. The charging information of the electric vehicle includes the battery management system (BMS) status information and charging demand information. (2) The main controller in the charging pile body obtains the scheduling information of the appropriate power conversion unit based on the charging information of the electric vehicle, the working conditions of each power conversion unit in the charging pile body, and the working conditions of the switch module and each switching control board in the charging pile body, and provides power to the charging port in the charging column. (3) The main controller in the charging pile body determines the power conversion unit and switch to be scheduled based on the preset algorithm, schedules each power conversion unit according to the output order, and controls each switching control board to switch each switch. The preset algorithm can be a decision optimization algorithm based on the shortest path, etc. (4) The main controller in the charging pile body starts charging and controls the sub-controller in the charging column to monitor and feedback the data during the charging process until charging is completed.

[0037] It is understandable that in some feasible embodiments, the charging device provided by the present application includes multiple power modules, switch modules and multiple charging ports. Among them, the multiple power modules and switch modules can be located in the charging stack body, and the multiple charging ports can belong to one or more charging posts. In some feasible embodiments, the present application also provides a charging stack, which includes the above-mentioned charging device and a charging gun. The number of charging guns can be multiple, and the charging gun is used to connect the charging device and the device to be charged. Among them, each charging gun corresponds to a charging port in the charging device. The charging stack can be as follows Figure 2 In some feasible implementations, the charging stack described above can constitute a charging system together with the device to be charged, and the device to be charged can be charged using the electric energy provided by the charging stack.

[0038] In other feasible embodiments, the charging device provided by the present application includes multiple power modules, switch modules and multiple charging ports. Among them, multiple power modules and switch modules may be located in the charging stack body, and multiple charging ports may directly belong to multiple charging guns, that is, the charging gun is directly led out of the charging stack body, and the power provided by the power module in the charging stack body is output to the device to be charged through the charging port in the charging gun. In this case, the charging device can be called a charging stack. In some other feasible embodiments, the charging device provided by the present application includes multiple power modules, switch modules and multiple charging ports. Among them, multiple power modules and switch modules may be located in the charging stack body, and multiple charging ports may belong to one or more charging posts, each charging post including one or more charging guns. That is to say, the charging gun is part of the charging post, and the charging device includes the charging stack body, the charging post and the charging gun. In this case, the charging device can also be called a charging stack. That is to say, the present application does not strictly distinguish the concepts of charging device and charging stack, which can be determined according to the actual application scenario. In some feasible embodiments, the above-mentioned charging stack can constitute a charging system together with the device to be charged, and the device to be charged can be charged with the power provided by the charging stack.

[0039] Combine the following Figure 3-Figure 14 , specifically introduces the structure of the charging device provided in this application.

[0040] See also Figure 3 , Figure 3 This is a schematic diagram of the structure of the charging device provided in this application. Figure 3 As shown, the charging device may include multiple power modules (such as Figure 3The first charging port and the second charging port are connected to the power modules 1 to n in the charging device), the switch module, the first charging port and the second charging port. It is understandable that the number of the first charging port and the second charging port included in the charging device can be one or more, and this application does not limit it. The first charging port and the second charging port are connected to the above-mentioned multiple power modules through the switch module. The first charging port and the second charging port are both charging ports for outputting electrical energy to charge the device to be charged (such as an electric car) (the charging port can be located at Figure 2 Each charging port can correspond to a charging device for directly connecting to the device to be charged (such as Figure 2 The maximum output power of the second charging port is greater than the maximum output power of the first charging port. The maximum output power of each charging port is equal to the sum of the powers that can be provided to the charging port by all power modules connected to the charging port. The maximum output power can be used to indicate the maximum charging power that the device to be charged connected to the charging port can obtain from the charging port. That is, when the first charging port and the second charging port are connected to Figure 3 When the electric vehicle 1 and the electric vehicle 2 are connected, the maximum charging power that the electric vehicle 2 can obtain is greater than the maximum charging power that the electric vehicle 1 can obtain. The above-mentioned charging device may also include a control module (including Figure 2 The control module can control the switch module, that is, control the working state (on or off) of each switch included in the switch module, so as to realize the scheduling and power distribution of the multiple power modules, and provide power for the first charging port and the second charging port, etc. Each of the multiple power modules is connected to a power supply, and is used to convert the power provided by the power supply into the power required by the device to be charged. The power provided by the power supply can be DC power or AC power. Accordingly, the power module can be used to convert AC power into DC power, DC power into DC power, DC power into AC power, or AC power into AC power, etc., and the power module can also perform voltage boosting or voltage reduction processing on the power provided by the power supply, etc., which can be determined according to the actual application scenario, and is not limited in this application. For the convenience of description, this application is explained by taking the example that the power module has the ability to convert AC power into DC power or DC power into DC power, and each power module includes Figure 2In the DC / DC, then, the electric energy output by the power module is direct current electric energy. The switch module is located at the DC output side of the multiple power modules. In the present application, the bus connected to the power module can be referred to as the output bus of the power module, and the bus connected to the first charging port, the second charging port and other charging ports can be referred to as the charging port bus. In the present application, each of the multiple power modules included in the charging device has an output bus, and the output bus may include a positive bus and a negative bus. The power output by each power module through its output bus may be fixed, wherein at least two power modules have different powers. Each power module can be obtained based on an integer number of power units. Then the power of each power unit may be an integer multiple of the power unit. For example, assuming that the power of the power unit is 40kw, then the power of some of the multiple power modules included in the above-mentioned charging device may be 40kw, and the power of another part of the power modules may be 80kw. For another example, the power of multiple power modules may be 40kw, 80kw, 120kw, etc., respectively, and this application is not limited. In the present application, each switch in the switch module may include a positive switch and a negative switch, the positive switch is connected between the positive bus of the output bus of the power module and the positive terminal of the charging port (or the positive bus of the charging port bus), and the negative switch is connected between the negative bus of the output bus of the power module and the negative terminal of the charging port (or the negative bus of the charging port bus). Each switch may be a bipolar contactor, a solid-state switch, a hybrid switch, etc., and the embodiments of the present application do not make too many restrictions on this.

[0041] In some feasible embodiments, any charging port in the above charging device can be connected to multiple power modules through a switching module. Specifically, each charging port can be connected to the output buses of at least two power modules through at least two switches in the switching module. When a certain switch among the at least two switches is turned on, the electric energy output by the power module connected to the switch through the output bus of the power module can be provided to the charging port connected to the switch. In other words, the switching module in the above charging device can be used to provide the output electric energy of at least two power modules connected to the first charging port to the first charging port, and provide the output electric energy of two or more power modules connected to the second charging port to the second charging port. Among them, there are at least two power modules with different powers among the two or more power modules connected to the second charging port. That is, the second charging port is connected to at least two power modules with different powers. In this way, the second charging port can obtain the electric energy provided by power modules with different powers, and can achieve a larger power output and provide it to the electric vehicle. It can be understood that the maximum output powers of the first charging port and the second charging port are different, and different charging types can be provided for the device to be charged. For example, the first charging port can provide "fast charging" for the electric vehicle, that is, the charging power provided is in the range of 40kw to 240kw, and the second charging port can provide "ultra-fast charging" for the electric vehicle, that is, the charging power provided is above 240kw. Among them, in some embodiments, two first charging ports can correspond to two charging guns connected to the same charging column. Therefore, the two first charging ports can form a group. For the convenience of distinction and operation and maintenance, each group of two first charging ports can have their own identifiers, such as "left charging port" and "right charging port". For the convenience of understanding, this application describes with the maximum output powers of the first charging port and the second charging port being 160kw and 480kw respectively. In this application, the first charging port can have a charging port bus. The second charging port can have two charging port buses. Two or more power modules connected to the second charging port can be connected to the two charging port buses, and any one of the two or more power modules is connected to one of the two charging port buses. Specifically, assuming that the two charging port buses of the second charging port are bus 1 and bus 2 respectively, and the power modules connected to the second charging port are power module 1, power module 2, power module 3,..., power module p (0 < p ≤ the above n), then the k (0 < k < p) power modules of power module 1,..., power module k can be connected to bus 1 of the second charging port through their respective output buses and the switching module. The (p - k) power modules of power module k + 1,..., power module p can be connected to bus 2 of the second charging port through their respective output buses and the switching module.In this way, different power modules are connected in parallel to the second charging port through two paths, so as to provide greater power for the second charging port; and when a fault such as a circuit breaker occurs in any charging port bus of the second charging port, the power output of the power module connected to the bus of the other charging port will not be affected, thereby improving charging reliability and flexibility.

[0042] In the present application, different charging powers can be provided through the first charging port and the second charging port to meet the charging needs of different electric vehicles and improve the charging utilization rate. Among them, the second charging port with a larger maximum output power can be connected to at least two power modules with different powers in the charging device, and each power module is obtained based on an integer number of power units. Therefore, the present application can use a combination of different power modules to provide electrical energy to the second charging port, and can reduce the number of power modules that need to be connected when providing a larger power to the second charging port, thereby reducing the number of switches and improving the switch utilization rate. Different power modules are connected in parallel to the second charging port in two ways, which can provide a larger power to the second charging port and improve charging reliability and flexibility.

[0043] In a possible implementation, Figure 4 The above-mentioned multiple power modules may include x first power modules (i.e. Figure 4 A1 to Ax in the figure) and y second power modules (i.e. Figure 4 In B1 to By), x can be a positive even number, and y can be a positive integer. The power of the second power module is greater than the power of the first power module. For example, Figure 4 The first power module may include a Figure 2 The DC / DC power conversion unit shown (i.e. the above-mentioned power unit) is Figure 4 The second power module may include two Figure 2 The DC / DC power conversion unit shown. In this case, the first power module and the second power module are obtained based on 1 and 2 power units respectively. The switch module may include a first switch (i.e. Figure 4 The switch S1 in the Figure 4 The first switch is used to connect the output bus of the first power module with any charging port (such as the first charging port or the second charging port), and the second switch is used to connect the output bus of the second power module with any charging port (such as the first charging port or the second charging port). When the charging device includes x first power modules and y second power modules, Figure 4 The first charging port CP1 or the second charging port ( Figure 4(not shown) The first power module can be connected through the above-mentioned first switch, and the second power module can be connected through the second switch. Any charging port can be connected to any first power module and any second power module. Among them, the number of first power modules and the number of second power modules that can be connected to the first charging port are in the range of 2~x, 0~y respectively. The number of first power modules and the number of second power modules that can be connected to the second charging port are in the range of 2~x, 1~y respectively. In this way, the switch module outputs the electric energy provided by the first power module and the second power module to the corresponding charging port through the first switch and the second switch, respectively, to realize power sharing of multiple power modules, which can reduce the number of switches, improve the utilization rate of switches, and improve the charging utilization rate.

[0044] In the present application, both the second power module and the first power module can be obtained based on an integer number of power units. Then, the power of the first power module and the second power module are both integer multiples of the power of the power unit. In some embodiments, the power of the first power module can be 1 times the power of the power unit, and the power of the second power module can be 2 times the power of the power unit. Exemplarily, the power of the first power module and the second power module can be 40kw and 80kw respectively. In some embodiments, the two first power modules (such as Figure 4 A1 and A2 in FIG. 1 may correspond to a DC conversion circuit supporting two independent wide-range voltage power outputs, and a first power module is a single output of the circuit. In other words, the number x of first power modules is an even number, and every two first power modules may physically belong to the same circuit, and each first power module has an output bus. Figure 4 As shown, each first power module can be regarded as a 40kw DC / DC, that is, one first power module corresponds to one power unit. Figure 4 B1) in it can be composed of two 40kw DC / DC in parallel, and each second power module has an output bus. That is, each second power module is obtained based on two power units. In this application, the power of the first power module and the second power module are both multiples of the power of the power unit. Combining the first power unit and the second power unit can provide a variety of charging powers, and can match the charging power curve of the electric vehicle in a hierarchical manner, which is conducive to simplifying the structure of the switch module, saving the number of switches, improving the utilization rate of the switch, and reducing the number of switch switching times.

[0045] In a possible implementation, Figure 4 In the charging device shown, the first charging port (i.e. Figure 4The maximum output power of CP1 in the charging device may be less than the sum of the powers of the x first power modules and the y second power modules. For any first charging port included in the charging device, assuming that the switch connected to the first charging port includes m first switches and n second switches, the first charging port may be connected to m first power modules among the x first power modules through the m first switches, and to n second power modules among the y second power modules through the n second switches. Wherein, m may be an even number greater than 1 and less than or equal to x, and n may be an integer less than or equal to y. Figure 4 The number of first charging ports included in the charging device shown can be 2 or other values, which can be determined according to the actual application scenario, and this application does not limit this. In this embodiment, multiple first power modules and second power modules are connected to the first charging port through the first switch and the second switch respectively, and multiple powers obtained by combining multiple first power modules and second power modules can be output to the electric vehicle, realizing flexible distribution of charging power, meeting the charging needs of different electric vehicles, and having high charging flexibility and high adaptability.

[0046] In one possible implementation, Figure 4 Based on the above, the charging device may include at least two charging modules (such as Figure 5M1 to Mn), each charging module includes the above-mentioned x first power modules and the above-mentioned y second power modules. In other words, the charging device includes a plurality of identical charging modules, each of which may include x first power modules and y second power modules. In the charging device, the first charging port can be connected to at least two first power modules in any of the at least two charging modules. The maximum output power of the first charging port is less than the sum of the powers of the above-mentioned x first power modules and the above-mentioned y second power modules, that is, the maximum output power of the first charging port is less than the power of one charging module. The second charging port can be connected to at least two first power modules and at least two second power modules in the at least two charging modules, and the maximum output power of the second charging port is greater than the power of one charging module. In other words, the power modules connected to the second charging port come from at least two charging modules. In the charging device, since a first charging port is only connected to a power module in one charging module and is not connected to power modules in other charging modules, the number of switches can be reduced. The first charging port and the second charging port can both be connected to the shared first power module and the second power module, and the maximum output power of the second charging port is greater than the maximum output power of the first charging port, so different powers can be output respectively to meet different charging needs and improve charging utilization. The first power module and the second power module with different powers are combined to provide power to the second charging port, which can achieve a larger power output, reduce the number of switches, and thus improve switch utilization.

[0047] like Figure 5 In the charging device shown, the output power of multiple first power modules and multiple second power modules can be provided to the first charging port and the second charging port, so as to realize the sharing of power modules and the dynamic allocation of power. It is understandable that, for the convenience of control, each charging module can correspond to an independent sub-controller to realize the control of the switch connected to the power module in the charging module, and the sub-controller corresponding to the charging module can be a part of the above-mentioned control module, and Figure 2 The main controller, sub-controller, and switching control board are different and exchange information with each other. In this embodiment, the power modules in two charging modules among the multiple charging modules in the charging device provide power to the second charging port together, and a larger charging power can be output through the second charging port, which can provide a variety of different charging methods, high charging flexibility, and improve charging utilization. In addition, since the multiple charging modules have the same structure, the difficulty of assembling the device can be reduced.

[0048] In one possible implementation, Figure 5The maximum output power of the second charging port in the charging device shown can be less than or equal to the sum of the powers of two charging modules in the at least two charging modules mentioned above. Assuming that two adjacent charging modules in the at least two charging modules mentioned above are two target charging modules, then the second charging port included in the charging device can connect the power modules in the two target charging modules. The switch connected to the second charging port can include 2u first switches and 2v second switches. At this time, the second charging port connects the u first power modules included in each of the two target charging modules mentioned above through the 2u first switches, and connects the v second power modules included in each of the two target charging modules mentioned above through the 2v second switches. Wherein, u is an even number greater than 1 and less than or equal to the above x, and v is an integer greater than or equal to 1 and less than or equal to the above y.

[0049] For example, Figure 6 As shown, the charging device includes two charging modules (M1 and M2). When x=4 and y=2, each charging module in the charging device includes four first power modules and two second power modules. The number of first switches connected to any second charging port CP2 is less than or equal to 8, and the number of second switches connected is less than or equal to 4. Taking the power of the first power module, the power of the second power module and the maximum output power of the second charging port as 40kw, 80kw and 480kw respectively, when the charging device includes one second charging port, the second charging port can be connected to the power modules in two target charging modules, wherein the number of first switches and second switches connected to each charging module can be 4 and 1 respectively, that is, u=4 and v=1. At this time, the charging device can provide a charging power of no more than 480kw through one second charging port to achieve supercharging. For another example, Figure 7As shown, the charging device may also include two second charging ports, each of which is connected to the power modules in the two target charging modules, wherein each second charging port is connected to the four first power modules and one second power module in each of the two target charging modules through eight first switches and two second switches. Since the four first power modules in the same target charging module are connected by two second charging ports, that is, these first power modules are shared, the above two second charging ports cannot output 480kw of power at the same time. When one of the second charging ports occupies t first power modules in a certain target charging module, the other second charging port can occupy up to another (4-t) power modules in the same target charging module. The power modules from the two target power modules can be connected to the two charging port buses of the second charging port respectively, improving the charging reliability and flexibility. In this way, the second charging port can obtain electrical energy from the two target charging modules to achieve a larger power output. The number of switches required for this connection method is not large, which can save the number of switches, improve the switch utilization rate, save circuit costs, and reduce the system failure rate. In some embodiments, each of the at least two charging modules includes two or more first charging ports, and for each first charging port, the first charging port can be connected to at least two power modules in the charging module associated with the first charging port through at least two switches. Figure 7 In the charging device shown, any first charging port is only connected to a power module belonging to the same charging module as the first charging port. In this way, more first charging ports can be provided, thereby improving charging utilization.

[0050] In one possible implementation, Figure 5 On the basis of Figure 8 As shown, the charging device includes at least two charging modules ( Figure 8 2 charging modules are shown in the figure), each charging module may include 4 first power modules and 1 second power module, that is, x=4, y=1. In the charging device, any second charging port CP2 ( Figure 8 As shown in the figure, the number of first switches that can be connected to a second charging port CP2 is less than or equal to 8, and the number of second switches that can be connected is less than or equal to 2. Taking the power of the first power module, the power of the second power module, the power of the third power module and the maximum output power of the second charging port as 40kw, 80kw, 120kw and 480kw respectively, the switches connected to the second charging port may include: 8 first switches and 2 second switches. That is, the second charging port CP2 is connected to 4 first power modules in each charging module through 8 first switches, and is connected to 1 second power module in each charging module through 2 second switches.

[0051] In one possible implementation, Figure 4 Based on this, we can get Fig. 9 The charging device shown in the figure, in which, in addition to the first switch and the second switch, the switch module in the charging device may also include a third switch (i.e. Fig. 9 and Fig.10 The third switch S3 is used to connect the second charging port and the output busbars of the power modules included in two of the at least two charging modules, that is, the second charging port is connected to the two charging modules through the third switch. For any second charging port included in the charging device, the switch connected to the second charging port may also include a third switch. Fig. 9 In the charging device shown, the second charging port can also be connected to the two target charging modules through the third switch. In this way, the second charging port can obtain electrical energy from the two charging modules to achieve a larger power output when the third switch is turned on. This connection method requires a small number of switches, which can save circuit costs, reduce system failure rates, and improve charging flexibility. In some embodiments, each of the at least two charging modules mentioned above includes two or more first charging ports. For each first charging port, the first charging port can be connected to at least two power modules in the power module where the first charging port is located through at least two switches. In this way, Fig. 9 In the charging device shown, the first charging port is only connected to the power module belonging to the same charging module group, so that more first charging ports can be provided, thereby improving the charging utilization rate.

[0052] In one possible implementation, Fig. 9 Based on Fig.10 ,like Fig.10 As shown, the charging device may include three of the above-mentioned charging modules and two of the above-mentioned second charging ports, and accordingly, the above-mentioned switch module may include two third switches. Among them, one second charging port is connected to two of the above-mentioned three charging modules through one third switch. Fig.10In the charging device shown, each charging module includes 4 first power modules and 1 second power module, that is, x=4, y=1. In the charging device, the number of first switches that can be connected to any second charging port CP2 is less than or equal to 8, the number of second switches that can be connected is less than or equal to 2, and the number of third switches that can be connected is 1. Taking the power of the first power module, the power of the second power module, the power of the third power module and the maximum output power of the second charging port as 40kw, 80kw, 120kw and 480kw respectively, the switches connected to the second charging port may include: 8 first switches, 2 second switches and 1 third switch. That is, the second charging port CP2 is connected via 8 first switches (such as Fig.10 The switch S1 in the charging module is connected to the four first power modules in each charging module respectively, and the two second switches (such as Fig.10 The switch S2 in the charging module is connected to a second power module in each charging module, and a third switch (such as Fig.10 The switch S3 in the circuit breaker connects the two charging modules. Fig.10 As shown, by controlling the on or off of the two third switches, the charging module located in the middle position among the three charging modules (also referred to as the second charging module) can be combined with the first charging module, or combined with the third charging module, to provide power to the second charging port corresponding to the first charging module or the second charging port corresponding to the third charging module, thereby improving the sharing degree of the power modules and reducing the number of switches. Fig.10 The charging device in the can provide two 480kw "supercharge" charging ports, which can meet the supercharge charging needs of two electric vehicles. Fig.10 In the charging device shown, each of the three charging modules can provide the electric energy of its respective first power module and / or second power module to the first charging port corresponding to the charging module, thereby ensuring that the charging device can provide more first charging ports (that is, charging ports that meet the conventional needs of general electric vehicles), thereby improving the reliability of the system and improving the charging utilization rate. Fig.10 The charging device in the vehicle can provide 12 160kw "fast charging" charging ports.

[0053] In one possible implementation, Figure 4 On the basis of, the above-mentioned multiple power modules may further include z third power modules (such as Fig.11C1 to Cz), z is a positive integer. The power of the third power module is greater than the power of the second power module. That is to say, the charging device may include three power modules with different powers, namely a first power module, a second power module and a third power module, and the numbers thereof are x, y and z respectively. Among them, the second power module and the first power module are both obtained based on an integer number of power units, and the third power module is also obtained based on an integer number of power units. For example, the power of the first power module, the power of the second power module and the power of the third power module may be 1 times, 2 times and 3 times the power of the power unit respectively. When the power of the power unit is 40kw, the power of the third power module may be 120kw. In some embodiments, the third power module may be obtained by connecting three power units in parallel, and two third power modules (i.e., six first power modules) are a whole, and an output bus of a third power module corresponds to one output of the whole. The second charging port may be connected to at least two first power modules, at least one second power module and at least one third power module among the multiple power modules through a switch module. In other words, the second charging port (such as Fig.11 CP2) The power modules connected by the switch module may include a third power module and a second power module, and may also include the first power module. By combining power modules of different powers, a greater power can be provided to the second charging port, so that the number of switches can be reduced when the second charging port obtains a larger output power. In this embodiment, the power of the first power module, the second power module, and the third power module are all multiples of the power of the power unit. By combining more power modules of different powers, a greater power can be provided to the second charging port, so that the number of switches that need to be connected when the second charging port obtains a larger output power is reduced, thereby reducing the number of switches.

[0054] In one possible implementation, Fig.11 On the basis of Fig.12CP3 in). The number of the third charging port can be one or more, which is not limited in the present application. Among them, the maximum output power of the third charging port is greater than the maximum output power of the above-mentioned first charging port, and less than the maximum output power of the above-mentioned second charging port. That is to say, the maximum output power of the third charging port is between the maximum output power of the first charging port and the maximum output power of the second charging port. For example, when the first charging port provides 160kw "fast charging" and the second charging port provides 480kw "super charging", the third charging port can provide 200kw "fast charging". The switch module in the charging device can also be used to provide the output power of at least two power modules connected to any third charging port to the third charging port, that is, the third charging port is connected to at least two power modules. Specifically, the power module connected to the third charging port may include at least two types of power modules among the above-mentioned first power module, the above-mentioned second power module and the above-mentioned third power module. In other words, the third charging port can be connected to any two types of power modules among the first power module, the second power module and the third power module in the charging device through the above-mentioned switch module, or the first power module, the second power module and the third power module in the charging device can be connected through the switch module, and the present application does not limit this. In this embodiment, the charging device can output different powers to charge electric vehicles through more types of charging ports, which can meet the charging needs of different electric vehicles, is compatible with multiple charging methods, has high charging flexibility and adaptability, and can improve charging utilization.

[0055] In a possible implementation, Fig.11 and Fig.12 In the charging device shown in FIG. 1 , in addition to the first switch and the second switch, the switch module may further include a fourth switch (eg Fig.11 and Fig.12The fourth switch is used to connect the output bus of the third power module with the second charging port or the third charging port. In other words, the fourth switch is used to connect the output bus of the third power module with any charging port included in the charging device. The first switch can also connect the output bus of the first power module and the third charging port. When the maximum output power of the third charging port is less than the sum of the powers of the x first power modules and the z third power modules, for any third charging port in the charging device, the switch connected to the third charging port may include s first switches and t fourth switches. This third charging port is connected to s first power modules among the x first power modules through the s first switches, and to t third power modules among the z third power modules through the t fourth switches. Wherein, s is an even number greater than 1 and less than or equal to the above x, and t is an integer less than or equal to the above z. In this way, the fourth switch can be used to output the electric energy provided by the third power module to each charging port. Since the power provided by the third power module is greater, the number of switches required to be used can be saved. For example, when x=4, y=4, z=2, the structure of the charging device can be as follows: Fig.13 As shown, at this time, the charging device includes 4 first power modules, 4 second power modules and 2 third power modules. In the charging device, the number of first switches that can be connected to the third charging port CP3 is less than or equal to 4, and the number of fourth switches that can be connected is less than or equal to 2. Taking the power of the first power module, the power of the second power module, the power of the third power module and the maximum output power of the third charging port as 40kw, 80kw, 120kw and 200kw respectively, the switches connected to the third charging port CP3 include the following cases: (1) 2 first switches and 1 fourth switch; (2) 1 second switch and 1 fourth switch. In order to ensure flexible power distribution, solution (1) can be adopted, that is, the third charging port CP3 is connected to 2 first power modules through 2 first switches, and is connected to 1 third power module through 1 fourth switch, so as to obtain the electric energy output by these first power modules and the third power module. Fig.13The charging device shown includes 6 third charging ports CP3, and the first power modules and second power modules connected to two adjacent third charging ports CP3 are different, such as (in order from left to right) the first third charging port is connected to A1, A3 and C1, the second third charging port is connected to A2, A4 and C2, and so on, and the other first charging ports are also connected to the corresponding power modules according to this rule. This can provide system reliability. It is understandable that the number of third charging ports included in the charging device is not limited to 6, and can be set as needed. In this embodiment, the first power module, the third power module and the third charging port are connected by multiple first switches and fourth switches. Since the power of the third power module is greater than the power of the first power module and the second power module, the number of switches is reduced while ensuring flexible power distribution. In addition, the power modules connected to the third charging port and the first charging port are as different as possible, which can reduce the mutual influence on the charging experience of the electric vehicles connected to them respectively, and can charge multiple electric vehicles at the same time. The present application is compatible with multiple charging methods, has high charging flexibility and adaptability, and can improve charging utilization.

[0056] In a possible implementation, Fig.13 In the charging device shown, any first charging port CP1 can be connected to the first power module and the second power module respectively through the first switch and the second switch. Taking the maximum output power of the first charging port as 160kw as an example, Fig.13 As shown, the first charging port CP1 can be connected to two first power modules through two first switches, and connected to one second power module through one second switch. It is understandable that the charging device can include multiple first charging ports. Fig.13 Taking the eight first charging ports CP1 shown in FIG. 1 as an example, it is understandable that the first power module and the second power module connected to two adjacent first charging ports CP1 are different. Fig.13 As shown, among the eight first charging ports CP1 (in order from left to right), each four form a group, and the power modules connected to the four first charging ports CP1 are respectively: A1, A3 and B1; A2, A4 and B2; A1, A3 and B3; A2, A4 and B4; in this way, it can be ensured that adjacent first charging ports obtain electric energy from different power modules, and when some power modules fail, the charging ports in the charging device will not be all affected, thereby improving the reliability of the charging device.

[0057] In a possible implementation, Fig.11 or Fig.12As shown, the maximum output power of the second charging port CP2 can be greater than or equal to the sum of the powers of the x first power modules and the y second power modules. For any second charging port included in the charging device, the switch connected to the second charging port may include u first switches, v second switches and w fourth switches. That is, the second charging port is connected to u first power modules through the u first switches, to v second power modules through the v second switches, and to w third power modules through the w fourth switches. Wherein, u is an even number greater than 1 and less than or equal to x, v is an integer greater than or equal to 1 and less than or equal to y, and w is an integer less than or equal to z. Exemplarily, in Fig.13 Based on Fig.14 ,exist Fig.14 In the charging device shown, the number of first switches that can be connected to the second charging port is less than or equal to 4, the number of second switches that can be connected is less than or equal to 4, and the number of fourth switches that can be connected is less than or equal to 2. Assuming that the power of the first power module, the power of the second power module, the power of the third power module and the maximum output power of the second charging port are 40kw, 80kw, 120kw and 480kw respectively, the switches connected to the second charging port may include: (1) 2 first switches, 2 second switches and 2 fourth switches; (2) 4 second switches, 1 second switch and 2 fourth switches. In order to ensure the flexible distribution of power and the reliability of the charging device, the scheme (1) can be adopted, that is, the second charging port is connected to the two first power modules through the two first switches, the two second power modules through the two second switches, and the two third power modules through the two fourth switches. In this way, the second charging port obtains electrical energy from the three power modules with different powers included in the charging device respectively, and a larger power output can be achieved with fewer switches, which can improve the switch utilization rate, reduce the circuit cost, and reduce the system failure rate. In addition, the second charging port is connected to multiple types of power modules as much as possible, which can improve the reliability of the charging device and improve the charging flexibility. It is understandable that the charging device can include multiple second charging ports, so that adjacent second charging ports can be connected to the same number of power modules, but the connected power modules are kept different as much as possible, which can improve the reliability of the charging device. For example, Fig.14 The charging device shown in the figure includes two second charging ports CP2, and the power modules connected to them are: A1, A3, B1, B3, C1 and C2; A2, A4, B2, B4, C1 and C2. When more second charging ports are connected in the charging device, the second charging ports can be connected to the power modules corresponding to the second charging ports according to this rule. Among them, different types of power modules can be connected to the two charging port buses of the second charging port respectively. Fig.14As shown, for any second charging port, the two third power modules connected thereto can be connected to one charging port bus of the second charging port, and the two first power modules and the two second power modules connected thereto can be connected to another charging port bus of the second charging port. In this way, the reliability and charging flexibility of the charging device can be improved.

[0058] In the present application, electric energy is provided to the device to be charged through the first charging port and the second charging port with different maximum output powers, and different charging modes can be provided to meet various charging needs of different cars. Among the multiple power modules, at least two power modules have different powers, and each power module is obtained based on an integer number of power units, that is, the power of each power module is an integer multiple of the power of the power unit. After combining these power modules, electric energy output is provided to the first charging port and the second charging port, which can match the charging power curve of the electric vehicle in a hierarchical manner, realize flexible distribution of charging power, and make the number of switches connected when the second charging port reaches the required maximum output power less, which is conducive to simplifying the switch module structure, improving switch utilization, and improving charging utilization. Different charging ports can be connected to various shared power modules, which can improve switch utilization, thereby saving costs and reducing the failure rate of the charging device. In the present application, the maximum output power of the first charging port is less than the sum of the powers of the first power module and the second power module included in the charging device, so the first charging port does not have to be connected to all power modules, and the number of switches can be reduced. Figure 7 , Fig.10 and Fig.14 Compared with the existing full-matrix charging stack, the charging device shown in the figure has a similar number of power conversion units (i.e., power units) and charging ports in the power module, and the number of switches used in the present application is reduced by about half, so the number of switches required for the charging device can be greatly reduced, and the switch utilization rate can be improved, thereby reducing circuit costs, reducing system failure rates, and reducing later maintenance costs. In addition, in the present application, the overlap rate of power modules connected to adjacent charging ports is low, which can achieve simultaneous output of electrical energy, is compatible with multiple charging methods, has high charging flexibility, high adaptability, and can improve charging utilization.

Claims

1. A charging device, It is characterized in that include: A plurality of power modules, a switch module, a first charging port and a second charging port; at least two of the plurality of power modules have different powers, and each of the plurality of power modules is obtained based on an integer number of power units; the maximum output power of the second charging port is greater than the maximum output power of the first charging port; the second charging port has two charging port bus bars; The switch module is used to provide output power of at least two power modules among the multiple power modules to the first charging port, and is used to provide output power of two or more power modules among the multiple power modules to the second charging port; at least two power modules among the two or more power modules have different powers, the two or more power modules are connected to two charging port bus bars of the second charging port, and any one power module among the two or more power modules is connected to one charging port bus bar of the two charging port bus bars, and the maximum output power of the second charging port is output by the two charging port bus bars in parallel; Wherein, the multiple power modules include x first power modules, y second power modules and z third power modules, the power of the second power module is greater than the power of the first power module, the power of the third power module is greater than the power of the second power module, two of the z third power modules are integrated into a whole and the output bus of one third power module corresponds to one output of the whole, x is a positive even number, y is a positive integer, and z is a positive integer; the switch module includes a first switch and a second switch, the first switch is used to connect the output bus of the first power module with the first charging port or the second charging port, and the second switch is used to connect the output bus of the second power module with the first charging port or the second charging port; The second charging port is connected to at least two first power modules, at least one second power module and at least one output of at least one of the plurality of power modules through the switch module.

2. The charging device according to claim 1, It is characterized in that The switches connected to the first charging port include m first switches and n second switches, where m is a positive even number less than or equal to x, and n is an integer less than or equal to y; the maximum output power of the first charging port is less than the sum of the powers of the x first power modules and the y second power modules; The first charging port is connected to the m first power modules through the m first switches, and is connected to the n second power modules through the n second switches.

3. The charging device according to claim 2, It is characterized in that The charging device comprises at least two charging modules, each charging module comprises the x first power modules and the y second power modules; The first charging port is connected to at least two first power modules in any one of the at least two charging modules through the switch module, and the second charging port is connected to at least two first power modules and at least two second power modules in the at least two charging modules through the switch module; The maximum output power of the first charging port is less than the power of one of the charging modules, and the maximum output power of the second charging port is greater than the power of one of the charging modules.

4. The charging device according to claim 3, It is characterized in that The maximum output power of the second charging port is less than or equal to the sum of the powers of two charging modules of the at least two charging modules, the at least two charging modules include two target charging modules, the switches connected to the second charging port include 2u of the first switches and 2v of the second switches, where u is a positive even number less than or equal to x, and v is a positive integer less than or equal to y; The second charging port is connected to the u first power modules included in each of the two target charging modules through the 2u first switches, and is connected to the v second power modules included in each of the two target charging modules through the 2v second switches.

5. The charging device according to claim 4, It is characterized in that The switch module further includes a third switch, and the third switch is used to connect the second charging port and an output busbar of a power module included in two charging modules of the at least two charging modules; The switch connected to the second charging port also includes one third switch, and the second charging port is also connected to the two target charging modules through the one third switch.

6. The charging device according to claim 5, It is characterized in that The at least two charging modules include three charging modules, the charging device includes two of the second charging ports, the switch module includes two of the third switches, and one of the two second charging ports is connected to two of the three charging modules via one of the third switches.

7. The charging device according to claim 1 or 2, It is characterized in that The charging device further comprises a third charging port, wherein the maximum output power of the third charging port is greater than the maximum output power of the first charging port and less than the maximum output power of the second charging port; The third charging port is connected to at least two power modules through the switch module, and the at least two power modules include at least two types of power modules among the first power module, the second power module and the third power module.

8. The charging device according to claim 7, It is characterized in that The switch module further includes a fourth switch, the fourth switch being used to connect the output bus of the third power module with the second charging port or the third charging port, the maximum output power of the third charging port being less than the sum of the powers of the x first power modules and the z third power modules; The switches connected to the third charging port include s first switches and t fourth switches, the third charging port is connected to the s first power modules through the s first switches, and is connected to the t third power modules through the t fourth switches; s is an even number greater than 1 and less than or equal to x, and t is an integer less than or equal to z.

9. The charging device according to claim 8, It is characterized in that The maximum output power of the second charging port is greater than or equal to the sum of the powers of the x first power modules and the y second power modules; The switches connected to the second charging port include u first switches, v second switches and w fourth switches. The second charging port is connected to the u first power modules through the u first switches, connected to the v second power modules through the v second switches, and connected to the w third power modules through the w fourth switches; u is an even number greater than 1 and less than or equal to x, v is an integer greater than or equal to 1 and less than or equal to y, and w is an integer less than or equal to z.

10. A charging stack, It is characterized in that The charging stack comprises a charging device and a charging gun as described in any one of claims 1 to 9, and the charging gun connects the charging device and a device to be charged.

11. A charging system, It is characterized in that The charging system comprises the charging stack as claimed in claim 10 and a device to be charged, wherein the device to be charged is connected to the charging stack.

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