Charging pile heating method and related device
By activating the PFC circuit in the charging pile for heating, the problem of charging pile equipment failing to start in low-temperature environments is solved, achieving cost reduction without the need for additional heating equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2026-03-10
AI Technical Summary
Some devices on charging stations cannot start in low-temperature environments. Existing technologies solve this problem by adding heating equipment, but this increases costs.
By activating the power factor correction (PFC) circuit of at least one charging module in the charging pile, the charging pile enters a heating mode, utilizing the heat generated by components such as inductors in the PFC circuit for heating, eliminating the need for additional heating equipment.
The ability to effectively start charging stations in low-temperature environments reduces the cost of charging stations.
Smart Images
Figure CN121625862A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of charging piles, and more particularly to a charging pile heating method and related device. BACKGROUND
[0002] When starting, if the ambient temperature is too low, some devices of the charging pile, such as a meter, a POS (Point of sales) machine, a screen, etc., cannot work.
[0003] Currently, heating devices are generally added to the charging pile to solve the problem of starting in a low-temperature environment, but this also increases the cost of the charging pile. SUMMARY
[0004] In view of the above problems, the present application provides a charging pile heating method and related device to achieve the purpose of solving the problem of starting in a low-temperature environment without additional heating devices. The specific scheme is as follows:
[0005] The first aspect of the present application provides a charging pile heating method, comprising:
[0006] obtaining the temperature in the charging pile;
[0007] if the temperature in the charging pile is lower than a threshold value, starting the power factor correction (PFC) circuit of at least one charging module in the charging pile to make the charging pile enter a heating mode.
[0008] In one possible implementation, the starting of the PFC circuit of at least one charging module in the charging pile comprises:
[0009] determining the to-be-started charging module from all charging modules according to the temperature in the charging pile, the number of the to-be-started charging module being negatively correlated with the temperature in the charging pile;
[0010] starting the PFC circuit of the to-be-started charging module.
[0011] In one possible implementation, after the charging pile enters the heating mode, the charging pile heating method further comprises:
[0012] if the temperature in the charging pile is not lower than the threshold value, controlling the charging pile to exit the heating mode.
[0013] In one possible implementation, after the starting of the PFC circuit of at least one charging module in the charging pile, the charging pile heating method further comprises:
[0014] turning off the heat dissipation fan in the charging pile;
[0015] The target fan is activated, and the target fan is at least one of the turbulence fan in the charging pile and the module fan corresponding to the activated charging module.
[0016] In one possible implementation, after controlling the charging pile to exit the heating mode, the charging pile heating method further includes:
[0017] Turn off the target fan;
[0018] If the charging pile enters charging mode, the cooling fan and the module fan will be activated.
[0019] In one possible implementation, the PFC circuit includes three switches, each connected to one of the three phases of the power grid. The power factor correction (PFC) circuit for activating at least one charging module in the charging pile includes:
[0020] In the PFC circuit controlling at least one charging module, two of the three switches are closed and one switch is open.
[0021] In one possible implementation, the PFC circuit controlling the at least one charging module has two of the three switches closed and one switch open, including:
[0022] Two of the three switches in the PFC circuit controlling the at least one charging module are closed and opened in a pulse manner.
[0023] In one possible implementation, two of the three closed switches constitute a switch combination. After the charging pile enters the heating mode, there are multiple heating cycles, and the switch combinations corresponding to adjacent heating cycles are different.
[0024] A second aspect of this application provides a controller, comprising: at least one processor and a memory connected to the processor, wherein:
[0025] The memory is used to store computer programs;
[0026] The processor is used to execute the computer program so that the controller can implement the charging pile heating method of the first aspect or any implementation thereof.
[0027] A third aspect of this application provides a charging pile, including: a controller, a temperature sensor, and at least one charging module;
[0028] The temperature sensor is used to detect the temperature inside the charging pile and send the temperature to the controller;
[0029] The charging module includes a PFC circuit;
[0030] The controller is used to execute the charging pile heating method described in the first aspect or any implementation thereof.
[0031] The fourth aspect of this application provides a computer program product, including computer-readable instructions, which, when executed on a controller, cause the controller to implement the charging pile heating method described in the first aspect or any implementation thereof.
[0032] By means of the above technical solution, the charging pile heating method and related device provided in this application can enter the heating mode by activating the PFC circuit of at least one charging module in the charging pile when the temperature inside the charging pile is lower than the threshold. The heating mode is entered by using the heat generated by the inductor and other components in the PFC circuit to heat the charging pile. The problem of starting the charging pile in a low temperature environment can be solved without adding additional heating equipment, thereby reducing the cost of the charging pile. Attached Figure Description
[0033] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.
[0034] Figure 1 A schematic flowchart of a charging pile heating method provided in an embodiment of this application;
[0035] Figure 2 A schematic diagram of a PFC circuit provided in an embodiment of this application;
[0036] Figure 3 A schematic diagram of an LLC circuit provided in an embodiment of this application;
[0037] Figure 4 This is a schematic diagram of a charging pile structure provided in an embodiment of this application;
[0038] Figure 5 This is a schematic diagram of the airflow direction under a heating mode provided in an embodiment of this application;
[0039] Figure 6 This is a schematic diagram of airflow direction in a charging mode provided in an embodiment of this application;
[0040] Figure 7 This application provides a schematic diagram of a PFC switch control.
[0041] Figure 8 A schematic diagram of the current loop when the PFC switch is closed is provided in an embodiment of this application;
[0042] Figure 9A schematic diagram of another current loop under PFC switch closure provided in an embodiment of this application;
[0043] Figure 10 A schematic diagram of another current loop under PFC switch closure provided in an embodiment of this application;
[0044] Figure 11 This is a schematic diagram of a controller structure provided in an embodiment of this application. Detailed Implementation
[0045] The embodiments of this application are described below with reference to the accompanying drawings. The terminology used in the implementation section of this application is for explaining specific embodiments only and is not intended to limit the scope of this application.
[0046] The embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art will recognize that, with technological advancements and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.
[0047] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms are interchangeable where appropriate; this is merely a way of distinguishing objects with the same attributes in the embodiments of this application. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, so that a process, method, system, product, or apparatus that comprises a series of elements is not necessarily limited to those elements, but may include other elements not explicitly listed or inherent to those processes, methods, products, or apparatuses.
[0048] This application provides a method for heating a charging pile. The method for heating a charging pile according to this application will be described in detail below with reference to the accompanying drawings.
[0049] Reference Figure 1 , Figure 1 This is a schematic flowchart of a charging pile heating method provided in an embodiment of this application, as shown below. Figure 1 As shown in the embodiment of this application, a charging pile heating method may include steps 101 to 102, which are described in detail below.
[0050] 101: Obtain the temperature inside the charging station;
[0051] Understandably, temperature sensors can be installed inside charging stations to detect the temperature inside the station.
[0052] In one embodiment, the temperature inside the charging pile can be acquired periodically, and the period can be the sampling period of the temperature sensor.
[0053] 102: When the temperature inside the charging pile is below a threshold, activate the PFC circuit of at least one charging module in the charging pile to put the charging pile into heating mode.
[0054] The threshold is preset and can be the minimum temperature at which the equipment inside the charging pile can operate normally, for example, the threshold can be set to 0°C.
[0055] like Figure 2 As shown, the PFC (Power Factor Correction) circuit in the charging module includes three inductors and three switches (Sa, Sb, Sc) connected to the three phases (Va, Vb, and Vc) of the power grid. After the PFC circuit of at least one charging module in the charging pile is activated, current flows through the inductors and switches, generating heat and heating the charging pile.
[0056] It should be noted that in normal operation, i.e., in charging mode, the main function of the inductor in the PFC circuit is to adjust the current, rectify and filter, and work with switches Sa, Sb, and Sc to achieve AC / DC power conversion. Switches Sa, Sb, and Sc close or open according to the needs of power electronic conversion. After entering heating mode, the subsequent circuit of the PFC circuit is as follows: Figure 3 The LLC (resonant converter) circuit shown is not working; specifically, it is controlled by... Figure 3 Turning off Q1-Q4 in the LLC circuit disables its operation.
[0057] Since each charging module in the charging pile includes a PFC circuit, this embodiment reuses the existing PFC circuit, without requiring any hardware modification to the charging pile. This embodiment can achieve heating of the charging pile by optimizing the control strategy of PFC, without the need to add additional heating equipment, thus solving the problem of starting the charging pile in a low-temperature environment and reducing the cost of the charging pile.
[0058] like Figure 4 As shown, a charging pile generally includes multiple charging modules. When it is necessary to heat the charging pile, the PFC circuit of all charging modules in the charging pile can be activated, or the PFC circuit of some charging modules in the charging pile can be activated. This embodiment does not make specific limitations.
[0059] In one possible implementation, the number of charging modules to be activated is determined based on the temperature inside the charging pile. The number of charging modules to be activated is negatively correlated with the temperature inside the charging pile; that is, the lower the temperature inside the charging pile, the more charging modules to be activated.
[0060] Specifically, a correspondence can be established between the temperature range within the charging pile and the number of charging modules to be activated, based on actual heating requirements. After obtaining the temperature within the charging pile, the number of charging modules to be activated is determined according to this correspondence. Once the number N of charging modules to be activated is determined, N charging modules are selected within the charging pile as the modules to be activated, and then the PFC circuits of these N modules are activated. The charging modules to be activated can be selected randomly or according to their numerical order; this embodiment does not impose any specific limitations.
[0061] For example, if the temperature inside the charging pile is less than -30°C, all charging modules inside the charging pile are designated as modules to be started for heating, so that the temperature of the charging pile reaches the threshold in the shortest possible time. If the temperature inside the charging pile is not less than -30°C, some charging modules inside the charging pile can be designated as modules to be started for heating, so as to avoid the problem that the heating time to the threshold is too short and uniform heating cannot be achieved, which would result in the problem that although the temperature inside the charging pile reaches the threshold, some devices inside the charging pile have not yet reached the threshold and cannot work normally.
[0062] Furthermore, in order to improve the heating effect of the charging pile, the direction and speed of air flow inside the charging pile can be changed by controlling the start and stop of the fan inside the charging pile, so as to achieve rapid flow of hot air and uniform heating of the charging pile.
[0063] In one possible implementation, after activating the PFC circuit of at least one charging module in the charging pile, the cooling fan in the charging pile is turned off to reduce heat loss within the charging pile. At the same time, the module fan corresponding to the activated charging module is activated so that the module fan can dissipate the heat generated by the PFC circuit in the charging module to the outside of the charging module.
[0064] Specifically, after activating the PFC circuit of at least one charging module in the charging pile, the cooling fan in the charging pile is turned off to prevent the heat generated by the PFC circuit from being carried outside the charging pile through the airflow, thereby reducing heat loss inside the charging pile. At the same time, the target fan is activated, which is at least one type of fan among the turbulence fan in the charging pile and the module fan corresponding to the activated charging module.
[0065] For example, such as Figure 5As shown, outside air enters the power unit of the charging pile through the air inlet. The power unit includes charging modules. After activating the PFC circuit of at least one charging module in the charging pile, the cooling fan in the charging pile is turned off to reduce heat loss. Simultaneously, the module fan corresponding to the activated charging module is activated. The module fan transfers the heat generated by the PFC circuit in the charging module to the outside of the charging module, making the heat distribution within the entire charging pile more even. Furthermore, a baffle fan can be activated. It is understandable that the baffle fan installed in the controller compartment can make the heat distribution more even, and the cooling fan being turned off reduces heat loss within the charging pile.
[0066] In heating mode, the temperature inside the charging pile continues to be periodically monitored. If the temperature inside the charging pile is not lower than the threshold, the charging pile is controlled to exit heating mode. After the charging pile exits heating mode, all devices in the charging pile can work normally. When a charging command is received, it enters charging mode, and the charging module operates based on the existing charging strategy, which will not be elaborated here. After the charging pile exits heating mode, if no charging command is received, the charging pile enters standby mode and continues to periodically monitor the temperature inside the charging pile. If the temperature inside the charging pile is lower than the threshold, the charging pile is controlled to re-enter heating mode.
[0067] In one possible implementation, the target fan is turned off after the charging pile exits the heating mode. Specifically, the fan can be turned off depending on its activation status; that is, if the turbulence fan is activated, the turbulence fan is turned off, and if the module fan is activated, the module fan is turned off to reduce power consumption.
[0068] In one possible implementation, if the charging pile enters charging mode after exiting heating mode, the cooling fan and module fan are activated, such as... Figure 6 As shown, outside air enters the power unit of the charging pile through the air inlet. The power unit includes the charging module. By keeping the module fan running, the heat from the charging module is dissipated outside, preventing overheating and affecting its performance. Simultaneously, the cooling fan continues to dissipate hot air outside the charging pile, preventing excessive temperature inside. It should be noted that the number of charging modules activated in charging mode may differ from the number activated in heating mode. The number of charging modules activated in charging mode is related to the charging power demand, and in charging mode, the LLC circuit, the downstream circuit of the PFC current, is operational.
[0069] like Figure 2As shown, the PFC circuit includes three switches, each connected to one of the three phases of the power grid. Specifically, the activation of the PFC circuit is controlled by adjusting the state of the switches in the PFC circuit within the charging module. If the charging station includes more than one charging module, the switches in the PFC circuit within the charging module can be controlled by a power unit controller. Specifically, when the controller in the charging station detects that the temperature inside the charging station is below a threshold, it sends a control command to the power unit controller corresponding to at least one charging module, such as... Figure 7 As shown, the power unit controller responds to control commands to control the switches in the PFC circuit.
[0070] like Figure 7 As shown, in the PFC circuit, the inductor, switches Sa, Sb, and Sc are connected in series. Due to the three-phase load balance design of the charging module, the maximum current that the three phases a, b, and c can withstand is the same. If all three switches are closed simultaneously, one of the switches will overload and burn out. To avoid this, in this embodiment, when the PFC circuit of at least one charging module in the charging pile is started, two of the three switches connected to the three phases of the power grid in the PFC circuit of at least one charging module are controlled to close, and one switch is opened. Figure 8 As shown, if switches Sa and Sb are closed simultaneously, and Sc is opened, then inductor La, switches Sa and Sb, and inductor Lb form a current loop. Figure 9 As shown, if switches Sa and Sc are closed simultaneously, and Sb is opened, then inductor La, switches Sa and Sc, and inductor Lc form a current loop. Figure 10 As shown, if switches Sb and Sc are closed simultaneously and Sa is opened, then inductor Lb, switches Sb and Sc and inductor Lc form a current loop.
[0071] Furthermore, even if two of the three switches in the PFC circuit connected to the three phases of the power grid are closed and one switch is open, the continuous high current can still damage the device if the heating mode lasts for a long time.
[0072] To address this technical issue, in one possible implementation, when the PFC circuit of at least one charging module in the charging pile is activated, two of the three switches in the PFC circuit of the at least one charging module that are connected to the three phases of the power grid are controlled to close and open in a pulse manner, that is, to intermittently conduct two of the three switches, so as to avoid excessive heat accumulation and ensure the safe operation of the PFC circuit.
[0073] To address this technical issue, in another possible implementation, when it is necessary to activate the PFC circuit of at least one charging module in the charging pile to enter the heating mode, for each charging module's PFC circuit, two switches are controlled to close and the remaining switch is controlled to open during each heating cycle.
[0074] Understandably, two closed switches are considered a switch combination. After the charging pile enters the heating mode, there will be multiple heating cycles. This is to prevent the same switch combination from continuously closing for heating. Therefore, multiple switch combinations are used to alternately close for continuous heating. In an optional embodiment, the switch combinations corresponding to adjacent heating cycles are different. The heating mode includes multiple heating cycles, the duration of which is preset. The three switches can form three switch combinations: Combination 1: Sa and Sb closed, Sc open; Combination 2: Sa and Sc closed, Sb open; and Combination 3: Sb and Sc closed, Sa open. For example, in the first heating cycle, the switch combination of Combination 1 is controlled to close, i.e., Sa and Sb are closed and Sc is open; in the second heating cycle, the switch combination of Combination 2 is controlled to close, i.e., Sa and Sc are closed and Sb is open; and in the third heating cycle, the switch combination of Combination 3 is controlled to close, i.e., Sb and Sc are closed and Sa is open. The first, second, and third heating cycles are three consecutive heating cycles. This method ensures that all three switches have time to open, effectively balancing the lifespan of the switches.
[0075] The above describes a charging pile heating method provided by the embodiments of this application. The following will describe the apparatus for performing the above-described charging pile heating method.
[0076] This application provides a charging pile heating device, comprising:
[0077] Temperature acquisition unit, used to acquire the temperature inside the charging pile;
[0078] The PFC circuit activation unit is used to activate the power factor correction (PFC) circuit of at least one charging module in the charging pile when the temperature inside the charging pile is lower than a threshold, so as to put the charging pile into heating mode.
[0079] In one possible implementation, the PFC circuit activation unit is specifically used to determine the charging module to be activated from all charging modules based on the temperature inside the charging pile, wherein the number of the charging module to be activated is negatively correlated with the temperature inside the charging pile; and to activate the PFC circuit of the charging module to be activated.
[0080] In one possible implementation, the charging pile heating device further includes:
[0081] The mode switching unit is used to control the charging pile to exit the heating mode if the temperature inside the charging pile is not lower than a threshold after the charging pile enters the heating mode.
[0082] In one possible implementation, the charging pile heating device further includes:
[0083] A first fan control unit is configured to turn off the cooling fan in the charging pile after activating the PFC circuit of at least one charging module in the charging pile.
[0084] The second fan control unit is used to control the target fan to start after the PFC circuit of at least one charging module in the charging pile is activated. The target fan is at least one of the turbulence fan in the charging pile and the module fan corresponding to the activated charging module.
[0085] In one possible implementation, the charging pile heating device further includes:
[0086] The third fan control unit is used to turn off the target fan after exiting the heating mode;
[0087] The fourth fan control unit is used to start the cooling fan and the module fan after exiting the heating mode.
[0088] In one possible implementation, the PFC circuit includes three switches, each connected to one of the three phases of the power grid. The PFC circuit activation unit is specifically used to control two of the three switches in the PFC circuit of the at least one charging module to close and one switch to open.
[0089] In one possible implementation, the PFC circuit activation unit is specifically used to control two of the three switches in the PFC circuit of the at least one charging module to close and open in a pulse manner.
[0090] In one possible implementation, two of the three closed switches constitute a switch combination. After the charging pile enters the heating mode, there are multiple heating cycles, and the switch combinations corresponding to adjacent heating cycles are different.
[0091] This embodiment discloses a charging pile heating device. When the temperature inside the charging pile is lower than a threshold, it activates the PFC circuit of at least one charging module in the charging pile to enter a heating mode. The device uses the heat generated by components such as inductors in the PFC circuit to heat the charging pile. This solves the problem of starting the charging pile in a low-temperature environment without the need for additional heating equipment, thus reducing the cost of the charging pile.
[0092] This application also provides a controller in its embodiments. (See reference...) Figure 11 The diagram illustrates a structural schematic suitable for implementing the controller in the embodiments of this application. The controller in the embodiments of this application can be an embedded device, including but not limited to microcontroller units (MCUs). Figure 11The controller shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.
[0093] like Figure 11 As shown, the controller may include a processing unit 101, which can perform various appropriate actions and processes according to a program stored in read-only memory (ROM) 102 or a program loaded from storage device 108 into random access memory (RAM) 103. When the controller is powered on, RAM 103 also stores various programs and data required for controller operation. The processing unit 101, ROM 102, and RAM 103 are interconnected via bus 104. Input / output (I / O) interface 105 is also connected to bus 104.
[0094] Typically, the following devices can be connected to I / O interface 105: input devices 106 including, for example, touchscreens, touchpads, keyboards, cameras, etc.; output devices 107 including, for example, liquid crystal displays (LCDs), speakers, etc.; storage devices 108 including, for example, memory cards, hard drives, etc.; and communication devices 109. Communication device 109 allows the controller to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 11 A controller with various devices is shown; however, it should be understood that implementation or possession of all the devices shown is not required. More or fewer devices may be implemented alternatively.
[0095] This application also provides a charging pile in its embodiments, such as Figure 3 As shown, the charging station includes a controller, a temperature sensor, and at least one charging module. Figure 3 (The example includes four charging modules.)
[0096] Temperature sensors are used to detect the temperature inside the charging station and send the temperature data to the controller.
[0097] The controller is used to acquire the temperature inside the charging pile. If the temperature inside the charging pile is lower than a threshold, the controller activates the power factor correction (PFC) circuit of at least one charging module in the charging pile to put the charging pile into heating mode.
[0098] The charging module includes a PFC circuit. When the PFC circuit is activated, the inductors and other components in the PFC circuit generate heat to heat the charging pile.
[0099] Furthermore, the charging station also includes a cooling fan, a turbulence fan, and a module fan corresponding to each charging module.
[0100] After the controller activates the PFC circuit of at least one charging module in the charging pile, it shuts down the cooling fan in the charging pile and controls the target fan to start. The target fan is at least one of the turbulence fan in the charging pile and the module fan corresponding to the activated charging module, so that the heated air flows in the cabinet of the charging pile to heat the components inside the cabinet.
[0101] When the controller detects that the temperature inside the charging pile is not lower than the threshold, it controls the charging pile to exit the heating mode and shuts down the target fan. That is, if the turbulence fan is already running, it will be turned off; if the module fan is already running, it will be turned off, in order to reduce power consumption. If the charging pile exits the heating mode and then enters the charging mode, it will start the cooling fan and the module fan to achieve heat dissipation and prevent the temperature inside the cabinet from becoming too high.
[0102] This application also provides a computer program product including computer-readable instructions, which, when executed on a controller, cause the controller to implement any of the charging pile heating methods provided in this application.
[0103] This application also provides a computer-readable storage medium carrying one or more computer programs. When the one or more computer programs are executed by a controller, the controller can implement any of the charging pile heating methods provided in this application.
[0104] It should also be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. In addition, in the device embodiment drawings provided in this application, the connection relationship between modules indicates that they have a communication connection, which can be implemented as one or more communication buses or signal lines.
[0105] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware, or it can be implemented by special-purpose hardware including application-specific integrated circuits, special-purpose CPUs, special-purpose memory, special-purpose components, etc. Generally, any function performed by a computer program can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be diverse, such as analog circuits, digital circuits, or special-purpose circuits. However, for this application, software program implementation is more often the preferred implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium, such as a computer floppy disk, USB flash drive, mobile hard disk, ROM, RAM, magnetic disk, or optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, training equipment, or network device, etc.) to execute the methods described in the various embodiments of this application.
[0106] In the above embodiments, the implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, in the form of a computer program product.
[0107] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, training device, or data center to another website, computer, training device, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a training device or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)).
Claims
1. A method for heating a charging pile, characterized in that, The method comprises: acquiring a temperature in a charging pile; starting a power factor correction (PFC) circuit of at least one charging module in the charging pile to make the charging pile enter a heating mode, if the temperature in the charging pile is lower than a threshold.
2. The charging station heating method of claim 1, wherein, The starting of the PFC circuit of the at least one charging module in the charging pile comprises: determining, from all charging modules, to-be-started charging modules according to the temperature in the charging pile, a number of the to-be-started charging modules being negatively correlated with the temperature in the charging pile; starting PFC circuits of the to-be-started charging modules.
3. The method of claim 1, wherein, After the charging pile enters the heating mode, the charging pile heating method further comprises: controlling the charging pile to exit the heating mode, if the temperature in the charging pile is not lower than the threshold.
4. The method of claim 1, wherein, After the starting of the PFC circuit of the at least one charging module in the charging pile, the charging pile heating method further comprises: turning off a heat dissipation fan in the charging pile; controlling a target fan to start, the target fan being at least one of a spoiler fan in the charging pile and a module fan corresponding to a started charging module.
5. The charging pile heating method according to claims 3 and 4, characterized in that, After the controlling of the charging pile to exit the heating mode, the charging pile heating method further comprises: turning off the target fan; starting the heat dissipation fan and the module fan, if the charging pile enters a charging mode.
6. The method of claim 1, wherein, The PFC circuit comprises three switches, each of which is connected with a three-phase power grid, and the starting of the PFC circuit of the at least one charging module in the charging pile comprises: controlling two of the three switches in the PFC circuit of the at least one charging module to be closed and one of the three switches to be opened.
7. The method of claim 6, wherein, The controlling of the two of the three switches in the PFC circuit of the at least one charging module to be closed and the one of the three switches to be opened comprises: controlling the two of the three switches in the PFC circuit of the at least one charging module to be closed and the one of the three switches to be opened in a pulsed manner.
8. The method of claim 6, wherein, The two of the three switches that are closed are a switch combination, and there are multiple heating periods after the charging pile enters the heating mode, and the switch combination corresponding to adjacent heating periods is different.
9. A controller characterized by, The method comprises: at least one processor and a memory connected with the processor, wherein: the memory is used to store a computer program; the processor is used to execute the computer program, so that the controller can implement the charging pile heating method according to any one of claims 1 to 8.
10. A charging post, characterized by The method comprises: a controller, a temperature sensor and at least one charging module; the temperature sensor is used to detect a temperature in a charging pile and send the temperature to the controller; the charging module comprises a PFC circuit; the controller is used to execute the charging pile heating method according to any one of claims 1 to 8.