Liquid cooling group charging system and hybrid heat dissipation group charging system

Abstract

The utility model discloses a liquid cooling group charging system and a hybrid heat dissipation group charging system, and relates to the technical field of charging systems. The control unit is connected with the power conversion module and the power distribution module of each charging system; the liquid cooling system is connected with each charging system; the main control unit is in communication connection with the liquid cooling system; and the main control unit is also in communication connection with the plurality of auxiliary control units. Through a refined control strategy between a main control unit and a plurality of auxiliary control units, a communication connection relation between the main control unit and a liquid cooling system and a communication connection relation between the main control unit and the plurality of auxiliary control units, if one set of charging system breaks down or the liquid cooling system breaks down, the main control unit is connected with the plurality of auxiliary control units. The other sets of charging systems are in communication connection with the auxiliary control units through the main control unit, so that potential safety hazards of the other sets of charging systems are avoided, and the reliability and safety of the system are improved. And a plurality of charging systems share one liquid cooling system, so that the system cost is reduced, and the occupied space of the system is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of charging systems, in particular to a liquid-cooled group charging system and a hybrid heat dissipation group charging system. Background Art

[0002] The group charging system of electric vehicles is a system that can provide charging services for multiple electric vehicles simultaneously. Through intelligent control strategies, the charging power can be dynamically allocated to maximize the utilization efficiency of charging facilities and reduce the impact on the power grid.

[0003] Conventional group charging systems are composed of multiple sets of charging systems, which are independent of each other. Each set of charging system independently completes its own charging and heat dissipation functions. If one set of charging system fails or the liquid cooling system fails, the other sets of charging systems are completely unaware, accompanied by potential safety hazards. Secondly, each set of charging systems in the multiple sets of charging systems is independent and has its own heat dissipation system, resulting in an increase in system cost and a large occupied space for each set of charging systems.

[0004] Therefore, how to reduce potential safety hazards, save system cost and occupied space is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a liquid-cooled group charging system and a hybrid heat dissipation group charging system to solve the problems of potential safety hazards, high system cost and large occupied space existing in conventional charging systems.

[0006] To solve the above technical problems, the utility model provides a liquid-cooled group charging system, which includes a control unit, a liquid cooling system and multiple charging systems;

[0007] The control unit is connected to the power conversion module and the power distribution module of each charging system; the liquid cooling system is connected to each charging system for liquid cooling and heat dissipation of each charging system.

[0008] The control unit includes a main control unit and multiple auxiliary control units; the main control unit is communicatively connected to the liquid cooling system for interacting liquid cooling control and corresponding feedback information;

[0009] The main control unit is also communicatively connected to multiple auxiliary control units for interacting charging control and corresponding feedback information.

[0010] On the one hand, the liquid cooling system includes a liquid cooling control unit, a liquid cooling circulation system and a radiator;

[0011] The liquid cooling control unit is communicatively connected to the main control unit and is connected to the liquid cooling circulation system and the radiator.

[0012] On the other hand, the liquid cooling circulation system includes a first liquid cooling circulation system and a second liquid cooling circulation system;

[0013] The pipeline of the first liquid cooling circulation system is connected to the power conversion modules of each of the charging systems, and is used to circulate the coolant through and cool the power conversion modules;

[0014] The pipeline of the second liquid cooling circulation system is connected to the power distribution modules of each of the charging systems, and is used to circulate the coolant through and cool the power distribution modules.

[0015] On the other hand, the charging system further includes temperature sensors arranged in the system cabinets of each charging system, which are used to measure the ambient temperature information of the system cabinets;

[0016] The main control unit is connected to the temperature sensors, and is used to control the liquid cooling system to dissipate heat from each of the charging systems according to the temperature information in each of the system cabinets.

[0017] On the other hand, the charging system further includes switching devices;

[0018] One end of the switching device is connected to the three-phase power input terminal, and the other end is connected to the power conversion module of the charging system;

[0019] The main control unit is also communicatively connected to the switching device, and is used to turn off the three-phase power charging of the faulty charging system by controlling the switching device when it is recognized that the charging system has a fault.

[0020] On the other hand, the charging system includes a charging terminal and a system cabinet; the charging terminal is connected to the corresponding system cabinet;

[0021] The liquid cooling system is connected to both the system cabinet and the charging terminal of the charging system.

[0022] On the other hand, the charging system includes a charging terminal and a system cabinet; the charging terminal includes a terminal controller and a terminal liquid cooling system;

[0023] The charging terminal is connected to the corresponding system cabinet;

[0024] The terminal controller is communicatively connected to the terminal liquid cooling system, and is used to interact with the liquid cooling control and the corresponding feedback information of the charging terminal.

[0025] On the other hand, the radiator is installed at a position where the coolant of the liquid cooling circulation system flows through each of the power conversion modules or power distribution modules of the charging systems and then flows out of each system cabinet;

[0026] Alternatively, the radiator is installed at a position at the entrance of the system cabinets of each of the charging systems where the coolant of the liquid cooling circulation system flows through.

[0027] To solve the above technical problems, the present utility model further provides a hybrid cooling group charging system, which includes an air-cooled group charging system and the liquid-cooled group charging system described in any one of the above.

[0028] The air-cooled group charging system includes an air-cooling system and an air-cooled charging system; the air-cooling system is used to perform air-cooling for the air-cooled charging system.

[0029] The main control unit is communicatively connected to the air-cooling system for interacting air-cooling control and corresponding feedback information.

[0030] Alternatively, the auxiliary control unit is communicatively connected to the air-cooling system for interacting air-cooling control and corresponding feedback information.

[0031] On the one hand, the three-phase alternating current of the charging system correspondingly connected to the liquid-cooling system of the liquid-cooled group charging system and the air-cooled charging system correspondingly connected to the air-cooling system are powered by the same three-phase power supply, or by different three-phase alternating currents of the corresponding groups.

[0032] A liquid-cooled group charging system provided by the present utility model includes a control unit, a liquid-cooling system and a plurality of charging systems; the control unit is connected to the power conversion module and the power distribution module of each charging system; the liquid-cooling system is connected to each charging system for performing liquid-cooling for each charging system; the control unit includes a main control unit and a plurality of auxiliary control units; the main control unit is communicatively connected to the liquid-cooling system for interacting liquid-cooling control and corresponding feedback information; the main control unit is also communicatively connected to a plurality of auxiliary control units for interacting charging control and corresponding feedback information. Through the refined control strategy between the main control unit and a plurality of auxiliary control units, the communication connection relationship between the main control unit and the liquid-cooling system, and the communication connection relationship between the main control unit and a plurality of auxiliary control units, if one set of charging systems fails or the liquid-cooling system fails, the remaining sets of charging systems form communication interactions through the communication connection relationship between the main control unit and a plurality of auxiliary control units, avoiding potential safety hazards of the remaining sets of charging systems and improving the reliability and safety of the system. Secondly, there is a common liquid-cooling system within a plurality of charging systems under the entire group charging system architecture, reducing system costs and the occupied space of the system.

[0033] In addition, the present utility model further provides a hybrid cooling group charging system, which has the same beneficial effects as the above liquid-cooled group charging system. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] To more clearly illustrate the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0035] Figure 1 is a schematic structural diagram of a conventional group charging system;

[0036] Figure 2 is a structural diagram of a liquid-cooled group charging system one provided by an embodiment of the present invention;

[0037] Figure 3 is a structural diagram of a liquid-cooled group charging system two provided by an embodiment of the present invention;

[0038] Figure 4 is a structural diagram of a liquid-cooled group charging system three provided by an embodiment of the present invention;

[0039] Figure 5 is a structural diagram of a hybrid cooling group charging system provided by an embodiment of the present invention. Detailed implementation manners

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0041] The core of the present invention is to provide a liquid-cooled group charging system and a hybrid cooling group charging system to solve the problems of potential safety hazards, relatively high system costs, and large occupied space existing in conventional charging systems.

[0042] To enable those skilled in the art to better understand the solution of the present invention, the following will further elaborate on the present invention in conjunction with the drawings and specific implementation manners.

[0043] A conventional group charging system consists of multiple charging systems, Figure 1 is a schematic structural diagram of a conventional group charging system, as Figure 1As shown, each charging system 1 has its own central control unit (CCU) to control, monitor and call its own plastic shell, AC contactor and power distribution unit respectively. All CCUs communicate with the centralized control unit. There is no direct interactive communication between the CCUs of each charging system 1. If one of the charging systems 1 fails, the other charging systems 1 will not have a direct interactive communication relationship. There will be a faulty charging system 1 between adjacent charging systems 1, which will affect the safety of the normal charging system 1 and even cause the normal charging system 1 to fail. In addition, each charging system 1 corresponds to a matching heat dissipation system, which increases the system cost and the size of the space occupied. The liquid-cooled group charging system provided by the utility model can solve the above technical problems.

[0044] Figure 2 A structural diagram of a liquid cooling group charging system 1 provided in an embodiment of the utility model, such as Figure 2 As shown, it includes a control unit, a liquid cooling system 2 and a plurality of charging systems 1;

[0045] The control unit is connected to the power conversion module and the power distribution module of each charging system 1; the liquid cooling system 2 is connected to each charging system 1 to provide liquid cooling and heat dissipation for each charging system 1;

[0046] The control unit includes a main control unit 3 and a plurality of auxiliary control units 4; the main control unit 3 is in communication connection with the liquid cooling system 2 for interactive liquid cooling control and corresponding feedback information;

[0047] The main control unit 3 is also connected to multiple auxiliary control units 4 for interactive charging control and corresponding feedback information.

[0048] Specifically, the liquid cooling system uses liquid to absorb and transfer heat, thereby cooling the device. In charging equipment, it plays an important role to ensure the high efficiency and safety of the charging process. The liquid cooling system can be used not only to cool the charging pile itself, but also to cool the cables and connectors connected to the charging pile, because they also generate heat when high current is transmitted. By using liquid cooling technology, the charging speed can be increased, the charging time can be reduced, and the reliability and safety of the entire charging process can be ensured.

[0049] The group charging system provides charging services for multiple electric vehicles at the same time and optimizes the charging process through dynamic power allocation technology. The group charging system of this embodiment can be an integrated or split type. The integrated charging system integrates the charging cabinet and the charging terminal together, and the split charging system separates the charging cabinet and the charging terminal.

[0050] The control unit is connected to the power conversion modules and power distribution modules of each charging system, and is used to control the power conversion and power distribution within each charging system. The liquid cooling system is connected to each charging system and is used to perform liquid cooling and heat dissipation for each charging system. Compared with the structure in a conventional charging system where a single charging system includes a set of liquid cooling systems, this embodiment reduces the system cost and the occupied space.

[0051] The control unit includes a main control unit and multiple auxiliary control units. The main control unit is communicatively connected to the liquid cooling system and is used to interact liquid cooling control and corresponding feedback information. It can be understood that the main control unit executes the main control program. When charging is required, after the control unit detects a charging request, it transmits the charging request information to the main control unit. After receiving the charging request command, the main control unit is communicatively connected to the liquid cooling system, controls the liquid cooling system to start, and interacts the feedback information of the charging request command with the liquid cooling control command to perform liquid cooling and heat dissipation for the heat generated during the charging process of each charging system.

[0052] The main control unit is communicatively connected to multiple auxiliary control units and is used to interact charging control and corresponding feedback information. After ensuring the normal operation of system detection and control, it needs to start the devices of each charging system normally and then transmit the charging control instructions to the auxiliary control units. The auxiliary control units work according to the received control instructions for the feedback information of their respective power conversion modules and power distribution modules. The auxiliary control units also need to start the charging terminal and control the power module and power distribution unit to start and output the corresponding voltage and current to complete the energy transmission for charging.

[0053] Before the control unit works, it is necessary to autonomously identify whether the system control unit is the main control unit or the auxiliary control unit after the system is powered on. After identifying the main control unit, the main control unit executes the main control program, and if it is identified as the auxiliary control unit, it executes the control logic of the auxiliary control unit.

[0054] A liquid-cooled group charging system provided by an embodiment of the present utility model, the liquid-cooled group charging system includes a control unit, a liquid-cooling system, and a plurality of charging systems; the control unit is connected to the power conversion module and the power distribution module of each charging system; the liquid-cooling system is connected to each charging system for liquid-cooling heat dissipation of each charging system; the control unit includes a main control unit and a plurality of auxiliary control units; the main control unit is communicatively connected to the liquid-cooling system for interacting liquid-cooling control and corresponding feedback information; the main control unit is also communicatively connected to a plurality of auxiliary control units for interacting charging control and corresponding feedback information. Through the refined control strategy between the main control unit and a plurality of auxiliary control units, the communication connection relationship between the main control unit and the liquid-cooling system, and the communication connection relationship between the main control unit and a plurality of auxiliary control units, the present utility model enables, if one set of charging systems fails or the liquid-cooling system fails, the remaining sets of charging systems to form communication interaction through the communication connection relationship between the main control unit and a plurality of auxiliary control units, avoiding potential safety hazards of the remaining sets of charging systems and improving the reliability and safety of the system. Secondly, there is a common liquid-cooling system within a plurality of charging systems under the entire group charging system architecture, reducing system costs and the space occupied by the system.

[0055] In some embodiments, as Figure 2 shown, the liquid-cooling system 2 includes a liquid-cooling control unit, a liquid-cooling circulation system, and a radiator;

[0056] The liquid-cooling control unit is communicatively connected to the main control unit 3 and is also connected to the liquid-cooling circulation system and the radiator.

[0057] Specifically, the liquid-cooling control unit is used to control the device or medium for outputting coolant. After receiving the liquid-cooling control instruction from the main control unit, the liquid-cooling control unit outputs coolant, enabling the liquid-cooling circulation system and the radiator to work together to perform liquid-cooling heat dissipation for each charging system.

[0058] The liquid-cooling circulation system is arranged through pipes in the power conversion module and the power distribution module of each charging system, which can be in the form of a liquid-cooling loop, and the pipes store coolant inside. The temperature information of the inlet and outlet of the radiator is controlled in real time, and the liquid-cooling circulation system is turned on according to the outlet liquid temperature for cooling the coolant flowing into the radiator.

[0059] The liquid-cooling system here may also include a circulation pump and a flow meter. The circulation pump circulates the coolant in the liquid-cooling circulation system, with the inflowing being low-temperature coolant and the outflowing being high-temperature coolant that takes away the heat of the charging gun. The flow meter is arranged at the end of the liquid-cooling circulation system for measuring the flow value of the coolant, so as to feed back to the liquid-cooling control unit to regulate the output amount of the coolant.

[0060] The installation position of the radiator is not limited. It can be at the position of the system cabinet of the charging system corresponding to the coolant outflow, or at the position of the system cabinet corresponding to the coolant inlet. In some embodiments, the radiator is installed at the position where the coolant flows out of the system cabinet after flowing through the power conversion module and the power distribution module of each charging system;

[0061] Alternatively, the radiator is installed at the inlet position of the liquid cooling circulation system flowing through the system cabinets of each charging system.

[0062] As Figure 2 shown, the setting of the radiator enables the liquid cooling circulation system to take away the heat of the radiator to improve the cooling effect of the charging system.

[0063] The connection relationship between the various devices in the liquid cooling system provided in this embodiment enables each charging system to be connected through the liquid cooling circulation system. The same set of liquid cooling systems is shared among multiple charging systems under the entire group charging system architecture, reducing system costs and the occupied space of the system.

[0064] In some embodiments, the liquid cooling circulation system includes a first liquid cooling circulation system and a second liquid cooling circulation system;

[0065] The pipeline of the first liquid cooling circulation system is connected to the power conversion modules of each charging system, and is used to circulate the coolant to flow through and cool the power conversion modules;

[0066] The pipeline of the second liquid cooling circulation system is connected to the power distribution modules of each charging system, and is used to circulate the coolant to flow through and cool the power distribution modules.

[0067] It can be understood that the liquid cooling and heat dissipation system in this embodiment mainly dissipates heat for the power conversion module and the power distribution module. Therefore, for different types of modules under each charging system, this embodiment corresponds one liquid cooling circulation system to one module. Therefore, the liquid cooling circulation system includes a first liquid cooling circulation system and a second liquid cooling circulation system; the pipeline of the first liquid cooling circulation system is connected to the power conversion modules of each charging system, and is used to circulate the coolant to flow through and cool the power conversion modules; the pipeline of the second liquid cooling circulation system is connected to the power distribution modules of each charging system, and is used to circulate the coolant to flow through and cool the power distribution modules.

[0068] The liquid cooling circulation system provided in this embodiment sets up its own circulation system corresponding to different modules, ensuring the reduction of system costs while improving the heat dissipation efficiency of the charging system.

[0069] In some embodiments, in order to improve the heat dissipation efficiency and make the ambient temperature of the charging system in a better temperature environment, the charging system further includes a temperature sensor arranged in the system cabinet of each charging system, which is used to measure the ambient temperature information of the system cabinet;

[0070] The main control unit is connected to the temperature sensor and is used to collect the temperature information of the system cabinet to control the liquid cooling system to dissipate heat from the charging system.

[0071] Specifically, the temperature sensor is arranged in the system cabinet of each charging system to measure the ambient temperature information of the system cabinet. When the temperature information of the system cabinet collected is greater than a certain preset temperature information, the liquid cooling system is started to perform liquid cooling on the charging system. There are no restrictions on the specific installation position and quantity of the temperature sensor. It can be evenly distributed at each environmental point of the system cabinet to ensure that the ambient temperature of the system cabinet collected is relatively balanced. It can also be installed near the module that needs to dissipate heat to ensure that the ambient temperature collected is the earlier output temperature parameter and control the liquid cooling system to dissipate heat as soon as possible.

[0072] The connection relationship between the main control unit and the temperature sensor provided in this embodiment is used to complete the monitoring of the ambient temperature of the system cabinet, so as to start the liquid cooling system to dissipate heat from the charging system when the ambient temperature is relatively high subsequently.

[0073] In some embodiments, the charging system further includes a switching device;

[0074] One end of the switching device is connected to the three-phase power input terminal, and the other end is connected to the power conversion module of the charging system;

[0075] The main control unit is also communicatively connected to the switching device and is used to cut off the three-phase power charging of the faulty charging system by controlling the switching device when a fault occurs in the charging system.

[0076] As Figure 2 shown, the main control unit 3 is also communicatively connected to the switching device to control the switching device to cut off the three-phase power charging of the faulty charging system in the case of identifying a fault in the charging system, ensuring that each device of the currently faulty charging system is damaged as little as possible. Since each switching device is connected to the main control unit, here through the way of communication interaction, other charging systems can know the faulty charging system to avoid potential safety hazards.

[0077] The switching device here can be an AC contactor or a circuit breaker, etc. If it is an AC contactor, it is an electrical switch device used to control the on and off of high-power alternating current. It can handle high current and is suitable for the high-power requirements during electric vehicle charging. The closing and opening of the contactor can be controlled by a remote signal to achieve automatic control. The AC contactor usually has overload and short-circuit protection functions to ensure that the power supply can be cut off in time in case of abnormal conditions, protecting the charging system and the electric vehicle. The AC contactor can quickly respond to the control signal and quickly connect or disconnect the power supply to meet the requirements for speed during the charging process.

[0078] The connection relationship between the switching device provided in this embodiment and the main control unit enables the main control unit to control corresponding to the interactive switch control and the corresponding feedback information, improving the fault detection efficiency of the charging system.

[0079] In some embodiments, as Figure 2 shown, the liquid cooling system can be used for liquid cooling and heat dissipation of the system cabinet, and can also be used for system heat dissipation of the charging terminal, that is, the charging system includes a charging terminal and a system cabinet; the charging terminal is connected to the corresponding system cabinet;

[0080] The liquid cooling system 2 is connected to both the system cabinet and the charging terminal of the charging system.

[0081] Specifically, the liquid cooling system is connected to both the system cabinet and the charging terminal of the charging system. The charging terminal and the system cabinet share a set of liquid cooling system and a main control unit, that is, a set of liquid cooling system dissipates heat for multiple system cabinets and multiple charging terminals, further saving system costs on the basis of ensuring that multiple charging systems use the same set of liquid cooling system.

[0082] In some embodiments, since the distance between the charging terminal and the system cabinet is relatively far, up to 100M at most, and the ambient temperatures of the system cabinet and the terminal are not exactly the same. In the case of adopting a set of heat dissipation systems, unified control cannot be achieved. When the liquid cooling system is turned on when the system cabinet is hot, the liquid cooling system of the charging terminal is wasted. If the system cabinet does not reach the preset temperature when the charging terminal is hot, turning on the liquid cooling system causes waste of liquid cooling and heat dissipation of the system cabinet. Therefore, the charging system includes a charging terminal and a system cabinet; the charging terminal includes a terminal controller and a terminal liquid cooling system;

[0083] The charging terminal is connected to the corresponding system cabinet;

[0084] The terminal controller is communicatively connected to the terminal liquid cooling system for interacting with the liquid cooling control of the charging terminal and the corresponding feedback information.

[0085] Specifically, Figure 3 This is a structural diagram of a second liquid cooling group charging system provided by an embodiment of the present invention. As Figure 3 shown, the charging terminal is connected to the corresponding system cabinet. The terminal controller is communicatively connected to the terminal liquid cooling system, and the functions of the terminal controller and the main control unit are the same, but are used for interacting with the liquid cooling control of the charging terminal and the corresponding feedback information. It should be noted here that the main control unit only controls the liquid cooling system of the system cabinet, and the terminal controller only controls the terminal liquid cooling system corresponding to the charging terminal.

[0086] The charging terminal and the system cabinet provided in this embodiment respectively correspond to their own liquid cooling systems, which can effectively solve the problems of long-distance routing of the cold source, conflicting heat dissipation between the system cabinet and the charging terminal under the same charging system, appropriately adjusting the temperature according to the ambient temperature of each, and saving the system wiring difficulty and interference problems.

[0087] In some embodiments, considering that the main control unit in the group charging system will not be updated iteratively for a long time, if we want to improve the function of the liquid cooling system, we need to redesign the main control unit, resulting in high R & D costs. Therefore, it further includes a first liquid cooling control board;

[0088] The first liquid cooling control board is communicatively connected to the main control unit and is also connected to the liquid cooling system, and is configured to receive the first liquid cooling control instruction from the main control unit to control the liquid cooling system to dissipate heat for the system cabinets of each charging system.

[0089] Figure 4 It is a structural diagram of a liquid cooling group charging system three provided by an embodiment of the present invention. As Figure 4 shown, the first liquid cooling control board 6 is communicatively connected to the main control unit 3 and is also connected to the liquid cooling system 2. That is to say, the function of liquid cooling control is separated and made into the first liquid cooling control board, which is communicatively connected to the main control unit, and is configured to receive the first liquid cooling control instruction from the main control unit to control the liquid cooling system to dissipate heat for the system cabinets of each charging system.

[0090] In other embodiments, it further includes a second liquid cooling control board 7;

[0091] The second liquid cooling control board 7 is communicatively connected to the terminal controller and is also connected to the terminal liquid cooling system 5, and is configured to receive the second liquid cooling control instruction from the terminal controller to control the terminal liquid cooling system 5 to dissipate heat for each charging terminal.

[0092] Combined with Figure 3 the embodiments, the liquid cooling control function corresponding to the charging terminal is also separated from the terminal controller. The second liquid cooling control board is communicatively connected to the terminal controller and is also connected to the terminal liquid cooling system, and is configured to receive the second liquid cooling control instruction from the terminal controller to control the terminal liquid cooling system to dissipate heat for each charging terminal.

[0093] The connection method of the independent liquid cooling control board provided in this embodiment separates the function of the liquid cooling control board alone on the basis of not redesigning the main control unit originally, realizes the continuous improvement of the function of the liquid cooling system, improves the user experience, and reduces the R & D cost of the main control unit.

[0094] Furthermore, the present invention also provides a hybrid cooling group charging system. Figure 5 It is a structural diagram of a hybrid cooling group charging system provided by an embodiment of the present invention. AsFigure 5 As shown, it includes an air-cooled group charging system 8 and the liquid-cooled group charging system according to the above.

[0095] The air-cooled group charging system 8 includes an air-cooling system 9 and an air-cooled charging system; the air-cooling system 9 is used to perform air-cooling heat dissipation for the air-cooled charging system.

[0096] The main control unit is communicatively connected to the air-cooling system 9 and is used to interact air-cooling control and corresponding feedback information.

[0097] Alternatively, the auxiliary control unit is communicatively connected to the air-cooling system 9 and is used to interact air-cooling control and corresponding feedback information.

[0098] Specifically, in order to improve the user experience, it includes an air-cooled group charging system and a liquid-cooled group charging system; the air-cooled group charging system includes an air-cooling system and an air-cooled charging system; the air-cooling system is used to perform air-cooling heat dissipation for the air-cooled charging system. The liquid-cooling system and the air-cooling system are used together to achieve the integration between the two and improve the diversity of heat dissipation.

[0099] In this embodiment, the main control unit is communicatively connected to the air-cooling system, so that the main control unit also performs air-cooling control on the air-cooling system, or is communicatively connected to the air-cooling system through the auxiliary control unit (as Figure 5 shown), and is used for the auxiliary control unit to perform air-cooling control on the air-cooling system.

[0100] The fusion process of using the liquid-cooling system and the air-cooling system together in this embodiment improves the diversity of heat dissipation. Corresponding to the connection relationship between the control unit and the air-cooling control, it enriches the diversity and flexibility of the air-cooling control.

[0101] In some embodiments, the three-phase alternating current of the charging system corresponding to the liquid-cooling system of the liquid-cooled group charging system and the air-cooled charging system corresponding to the air-cooling system are all powered by the same three-phase power supply, or are powered by different three-phase alternating current of the corresponding group.

[0102] Specifically, all the three-phase power can be used by one three-phase power supply, or it can be changed to multiple groups of three-phase power. There is no limitation here and it can be set according to the actual situation. Figure 5 Multiple groups of three-phase power are used in

[0103] The corresponding power supply method in this embodiment improves the diversity and flexibility of the connection method of the power supply input cable.

[0104] The above has introduced in detail a liquid-cooled group charging system and a hybrid heat dissipation group charging system provided by the present utility model. Each embodiment in the specification is described in a progressive manner, and the key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and reference can be made to the description in the method part for related parts. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the present utility model.

[0105] It should also be noted that in this specification, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the element.

Claims

1. A liquid cooling group charging system, characterized in that: Includes control unit, liquid cooling system and multiple charging systems; The control unit is connected to the power conversion module and the power distribution module of each charging system; the liquid cooling system is connected to each charging system for liquid cooling and heat dissipation of each charging system; The control unit includes a main control unit and a plurality of auxiliary control units; the main control unit is in communication connection with the liquid cooling system for interactive liquid cooling control and corresponding feedback information; The main control unit is also connected to the plurality of auxiliary control units for interactive charging control and corresponding feedback information.

2. The liquid cooling group charging system according to claim 1, characterized in that: The liquid cooling system includes a liquid cooling control unit, a liquid cooling circulation system and a radiator; The liquid cooling control unit is communicatively connected to the main control unit, and is connected to the liquid cooling circulation system and the radiator.

3. The liquid cooling group charging system according to claim 2, characterized in that: The liquid cooling circulation system comprises a first liquid cooling circulation system and a second liquid cooling circulation system; The pipeline of the first liquid cooling circulation system is connected to each power conversion module of the charging system, and is used for circulating coolant to flow through and cool the power conversion module; The pipelines of the second liquid cooling circulation system are connected to the power distribution modules of each charging system, and are used to circulate coolant through and cool the power distribution modules.

4. The liquid cooling group charging system according to claim 1, characterized in that: The charging system further comprises a temperature sensor disposed in a system cabinet of each charging system, for measuring ambient temperature information in each system cabinet; The main control unit is connected to the temperature sensor and is used to control the liquid cooling system to dissipate heat for each of the charging systems according to the temperature information in each of the system cabinets.

5. The liquid cooling group charging system according to claim 1, characterized in that: The charging system further includes a switching device; One end of the switch device is connected to the three-phase power input terminal, and the other end is connected to the power conversion module of the charging system; The main control unit is also communicatively connected to the switch device, and is used to control the switch device to shut down the three-phase electrical charging of the charging system with the fault when a fault occurs in the charging system.

6. The liquid cooling group charging system according to claim 1, characterized in that: The charging system includes a charging terminal and a system cabinet; the charging terminal is connected to the corresponding system cabinet; The liquid cooling systems are connected to the system cabinet of the charging system and the charging terminal.

7. The liquid cooling group charging system according to claim 1, characterized in that: The charging system includes a charging terminal and a system cabinet; the charging terminal includes a terminal controller and a terminal liquid cooling system; The charging terminal is connected to the corresponding system cabinet; The terminal controller is in communication with the terminal liquid cooling system for interactively controlling liquid cooling of the charging terminal and providing corresponding feedback information.

8. The liquid cooling group charging system according to claim 2, characterized in that: The radiator is installed after the coolant of the liquid cooling circulation system flows through the power conversion module or the power distribution module of each charging system and flows out of each system cabinet; Alternatively, the radiator is installed at a position where the coolant of the liquid cooling circulation system flows through the inlet of the system cabinet of each charging system.

9. A hybrid heat dissipation group charging system, characterized in that: It includes an air-cooled group charging system and a liquid-cooled group charging system as described in any one of claims 1 to 8 above; The air-cooled group charging system includes an air-cooling system and an air-cooled charging system; the air-cooling system is used to perform air cooling and heat dissipation for the air-cooled charging system; The main control unit is in communication with the air cooling system for interactive air cooling control and corresponding feedback information; Alternatively, the auxiliary control unit is communicatively connected to the air cooling system for interactive air cooling control and corresponding feedback information.

10. The hybrid heat dissipation group charging system according to claim 9, characterized in that: The three-phase AC power of the charging system corresponding to the liquid cooling system of the liquid-cooled group charging system and the three-phase AC power of the air-cooled charging system corresponding to the air cooling system are both supplied by the same three-phase power, or by different three-phase AC power supplies of the corresponding groups.

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