Charging pile and charging control method

Abstract

The invention provides a charging pile and a charging control method, the charging pile comprises a charging module and a heat dissipation device, one end of the heat dissipation device can be attached to or separated from the charging module, and the other end of the heat dissipation device is communicated with a low-temperature part; the heat dissipation device comprises a magnetic field generator and at least one heat dissipation module. The heat dissipation module comprises a magnetized part and a heat conduction part, the magnetized part and the heat conduction part are sequentially arranged in the direction from the charging module to the low-temperature part, and the magnetized part can move in the direction close to or away from the charging module; the magnetic field generator can provide a magnetic field for the magnetized part in an intermittent mode. According to the charging module, the heat of the charging module can be transferred to the low-temperature part step by step and step by step, heat dissipation of the charging module is achieved, a good heat dissipation effect can be provided, only the magnetized part performs intermittent reciprocating motion in the whole heat transfer process, the magnetic field generator intermittently provides a magnetic field, and unnecessary vibration or noise cannot be generated.

Description

Technical Field

[0001] The present invention relates to the technical field of charging equipment, and in particular to a charging pile and a charging control method. Background Art

[0002] With the development of automobile technology, electric vehicles have become more and more common in vehicles. At present, electric vehicles use batteries to provide power to the drive motor, which converts the power of the power source into mechanical energy, and then drives the wheels and working devices through the transmission device or directly. At the same time, electric vehicles are powered by the power stored in the battery and need to be charged through charging piles.

[0003] In the process of charging electric vehicles, the charging module (or power module) that converts AC to DC is often the largest source of heat in the existing charging pile. In order to ensure the normal operation and safety of the charging pile, the charging module needs to be cooled in time.

[0004] Existing charging piles often use air cooling for heat dissipation, such as patent CN201820358164.5, but the heat dissipation effect is poor and the operating noise is large; existing charging piles also use air conditioning refrigeration for heat dissipation and cooling, such as patent CN201910637429.4. Although the heat dissipation effect is good, the energy consumption is relatively large and the operating noise is also large. Summary of the invention

[0005] In view of this, the present invention aims to propose a charging pile and a charging control method to solve the problems of poor heat dissipation effect and high operating noise during the heat dissipation of the charging pile in the prior art.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A charging pile comprises a charging module and a heat dissipation device, wherein one end of the heat dissipation device can be attached to or separated from the charging module, and the other end is connected to a low-temperature part; the heat dissipation device comprises a magnetic field generator and at least one heat dissipation module; the heat dissipation module comprises a magnetic receiving part and a heat conducting part, and the magnetic receiving part and the heat conducting part are arranged in sequence along the direction from the charging module to the low-temperature part, and the magnetic receiving part can move in a direction close to or away from the charging module; the magnetic field generator can provide a magnetic field to the magnetic receiving part in an intermittent form.

[0008] Furthermore, in the direction from the charging module to the low-temperature part, the heat dissipation device includes at least two heat dissipation modules arranged in sequence.

[0009] Furthermore, when the magnetized component moves to a maximum position in a direction away from the charging module, the magnetic field generator provides a magnetic field to the magnetized component; when the magnetized component moves to a maximum position in a direction close to the charging module, the magnetic field generator stops providing a magnetic field to the magnetized component.

[0010] Furthermore, the side of the magnetic receiving component facing the charging module is recorded as the first fitting surface, and the side of the magnetic receiving component away from the charging module is recorded as the second fitting surface; when the magnetic receiving component moves to the maximum position in the direction away from the charging module, the second fitting surface of the magnetic receiving component fits with the thermal conductive component closest to the second fitting surface; when the magnetic receiving component moves to the maximum position in the direction close to the charging module, the first fitting surface of the magnetic receiving component fits with the charging module, or fits with the thermal conductive component closest to the first fitting surface.

[0011] Furthermore, a heat sink is provided on one side of the charging module close to the heat dissipation device, and for the magnetically attracted component closest to the charging module, the magnetically attracted component can be moved to fit with the heat sink.

[0012] Furthermore, the heat dissipation device includes a driver, which is connected to the magnetic component and is used to drive the magnetic component to move towards or away from the charging module.

[0013] Furthermore, the driver is provided with a driving rod, and the driving rod is connected to the magnetic receiving component closest to the charging module, and a connecting rod is provided between any two adjacent magnetic receiving components.

[0014] Furthermore, the charging pile includes an AC power supply and a charging gun, and the charging module is provided with a first converter and a second converter, the AC power supply is connected to the input end of the first converter through a charging main line group, and the output end of the first converter is connected to the charging gun; the input end of the second converter is connected to the charging main line group through a sub-line group, and the output end of the second converter is connected to a magnetic field generator; the charging main line group is provided with a first switch, and the connection point between the sub-line group and the charging main line group is located between the first switch and the first converter, and the sub-line group is provided with a second switch.

[0015] Furthermore, the output end of the second converter is connected to the magnetic field generator through a third line, the output end of the second converter is connected to the driver through a fourth line, and the third line is provided with a third switch.

[0016] A charging control method for a charging pile, applied to the charging pile, the charging control method comprising: S1, obtaining a charging start signal, closing a first switch; S2, real-time detection of a temperature T1 of a charging module;

[0017] S3, determine whether T1 is greater than the first preset value K1; if so, proceed to step S4; if not, return to step S2; S4, close the second switch, keep the third switch open, the driver drives the magnetic component to move to the maximum position in the direction close to the charging module, and counts the closing time P1 of the second switch; S5, determine whether P1 is greater than the first time length Q1; if so, reset P1 to zero, and proceed to step S6; if not, maintain the current state and re-execute step S5; S6, the driver drives the magnetic component to move to the maximum position in the direction away from the charging module, and closes the third switch at the same time, the magnetic field generator provides a magnetic field to the magnetic component, and counts the closing time P2 of the third switch; S7, determine whether P2 is greater than the second time length Q2; if so, reset P2 to zero, and return to step S2; if not, maintain the current state and re-execute step S7.

[0018] Compared with the prior art, the charging pile and charging control method described in the present invention have the following advantages:

[0019] The charging pile and charging control method described in the present invention enable the heat of the charging module to be "transferred" to the low-temperature part step by step and successively, thereby achieving heat dissipation of the charging module and providing a good heat dissipation effect. Moreover, during the entire heat transfer process, only the magnetic receiving component performs intermittent reciprocating movement and the magnetic field generator intermittently provides a magnetic field, and no unnecessary vibration or noise is generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 A simplified structural diagram of a charging pile according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a charging module and a heat dissipation device of a charging pile according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of a first operating state of the heat dissipation device according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of a second operating state of the heat dissipation device according to an embodiment of the present invention;

[0025] Figure 5 Another structural schematic diagram of the heat dissipation device according to an embodiment of the present invention;

[0026] Figure 6 A circuit diagram of a charging pile according to an embodiment of the present invention;

[0027] Figure 7 Another circuit diagram of a charging pile according to an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. Magnetic receiving part; 11. First fitting surface; 12. Second fitting surface; 2. Heat conducting part; 3. Magnetic field generator; 4. Driver; 41. Driving rod; 42. Connecting rod; 5. Charging module; 51. Heat sink; 6. Charging main line group; 61. First switch; 7. Sub-line group; 71. Second switch; 8. Third line; 81. Third switch; 9. Fourth line. DETAILED DESCRIPTION

[0030] The inventive concepts of the present disclosure will be described below using terms commonly used by those skilled in the art to convey the essence of their work to other persons skilled in the art. However, these inventive concepts can be embodied in many different forms and should not be considered limited to the embodiments described herein.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0033] In order to solve the problems of poor heat dissipation effect and high operating noise in the heat dissipation process of the charging pile in the prior art, this embodiment proposes a charging pile, such as the attached Figure 1-7 As shown, the charging pile includes a charging module 5 and a heat dissipation device, one end of the heat dissipation device can be attached to or separated from the charging module 5, and the other end is connected to the low-temperature part; the heat dissipation device includes a magnetic field generator 3 and at least one heat dissipation module; the heat dissipation module includes a magnetic receiving part 1 and a fixed position heat conductive part 2, in the direction from the charging module 5 to the low-temperature part, the magnetic receiving part 1 and the heat conductive part 2 are arranged in sequence, and the magnetic receiving part 1 can move in the direction close to or away from the charging module 5; the magnetic field generator 3 can provide a magnetic field to the magnetic receiving part 1 in an intermittent form.

[0034] The magnetized component 1 described in the present application is a magnetic material. The property of the magnetic material that it becomes hot when magnetized under the action of a magnetic field and becomes cold when demagnetized is utilized. For the heat dissipation module closest to the charging module 5, the magnetized component 1 is moved to the maximum position (fitted with the charging module 5) in the direction close to the charging module 5, and at the same time, the magnetic field generator 3 stops providing a magnetic field to the magnetized component 1. The magnetized component 1 becomes cold during the demagnetization process and can absorb the heat of the charging module 5; the magnetized component 1 after demagnetization and heat absorption is moved to the maximum position (fitted with the heat conductive component 2) in the direction away from ... The generator 3 provides a magnetic field to the magnetized component 1, and the magnetized component 1 transfers the heat it carries to the heat-conducting component 2 while being magnetized. Then the magnetized magnetized component 1 moves toward the charging module 5 to fit the charging module, and the cycle repeats. For the heat-conducting component 2 that has received the heat in the foregoing text, if only one heat dissipation module is set, the heat-conducting component 2 can transfer the heat directly to the low-temperature part. If two or more heat dissipation modules are set, the heat carried by the heat-conducting component 2 can be transferred to the magnetized component 1 in the "demagnetization and heat absorption state" in the adjacent heat dissipation module, so that the heat is transferred along the charging module 5 to the low-temperature part.

[0035] This process enables the heat of the charging module 5 to be "transferred" to the low-temperature part step by step and successively, thereby achieving heat dissipation of the charging module 5 and providing a good heat dissipation effect. Moreover, during the entire heat transfer process, only the magnetic component 1 performs intermittent reciprocating movements and the magnetic field generator 3 provides a magnetic field intermittently, and no unnecessary vibration or noise is generated.

[0036] The temperature of the low-temperature part should be at least lower than the maximum temperature of the charging module 5 under normal working conditions. Since the charging module 5 is often at 40°C-60°C under normal working conditions, and may even reach 80°C or higher, the low-temperature part of the present application can be the external environment (air) of the charging pile, and of course it can also be other low-temperature objects.

[0037] For a heat dissipation module with only one heat dissipation module, when the magnetic receiving component 1 and the charging module 5 are in a fitted state, the magnetic field generator 3 stops providing a magnetic field to the magnetic receiving component 1 ; when the magnetic receiving component 1 and the heat conducting component 2 are in a fitted state, the magnetic field generator 3 provides a magnetic field to the magnetic receiving component 1 .

[0038] In the direction from the charging module 5 to the low temperature part, the heat dissipation device includes at least two heat dissipation modules arranged in sequence. Accordingly, each magnetized component 1 in each heat dissipation module can correspond to a magnetic field generator 3, which can provide an intermittent magnetic field to each magnetized component 1 individually; the heat dissipation device can also be provided with only one magnetic field generator 3, which can provide an intermittent magnetic field to all magnetized components 1 at the same time.

[0039] Generally speaking, when the magnetized part 1 moves to the maximum position in the direction away from the charging module 5, the magnetic field generator 3 provides a magnetic field to the magnetized part 1; when the magnetized part 1 moves to the maximum position in the direction close to the charging module 5, the magnetic field generator 3 stops providing a magnetic field to the magnetized part 1.

[0040] The side of the magnetic receiving component 1 facing the charging module 5 is recorded as the first fitting surface 11, and the side of the magnetic receiving component 1 away from the charging module 5 is recorded as the second fitting surface 12; when the magnetic receiving component 1 moves to the maximum position in the direction away from the charging module 5, the second fitting surface 12 of the magnetic receiving component 1 fits with the thermal conductive component 2 closest to the second fitting surface 12; when the magnetic receiving component 1 moves to the maximum position in the direction close to the charging module 5, the first fitting surface 11 of the magnetic receiving component 1 fits with the charging module 5, or fits with the thermal conductive component 2 closest to the first fitting surface 11. Accordingly, there is only one magnetic receiving component 1 fitted with the charging module 5, namely, the magnetic receiving component 1 in the heat dissipation module closest to the charging module 5, and the remaining magnetic receiving components 1 all fit with the thermal conductive component 2 closest to their first fitting surfaces 11.

[0041] Preferably, a heat sink 51 is provided on the side of the charging module 5 close to the heat dissipation device, and for the magnetic receiving component 1 closest to the charging module 5, the magnetic receiving component 1 can be moved to fit with the heat sink 51. Therefore, since the conventional charging module 5 often has heat dissipation fins, the charging pile of the present application does not need to modify the charging module 5, and only needs to additionally set up a heat dissipation device in the conventional charging pile, which is conducive to the modification of the conventional charging pile. At the same time, for the heat conductive component 2 closest to the low temperature part, it can also be provided with heat dissipation fins, and the heat dissipation fins are provided on the side of the heat conductive component 2 facing the low temperature part to improve the heat dissipation efficiency of the heat dissipation device to the low temperature part.

[0042] The magnetic field generator 3 is a conventional electromagnet in the prior art, which can generate a magnetic field when powered on and stop generating a magnetic field when powered off. The magnetic receiving member 1 includes gadolinium or a gadolinium compound having a magnetocaloric effect. The heat conducting member 2 is a conventional ceramic having relatively good thermal conductivity.

[0043] The heat dissipation device includes a driver 4, which is connected to the magnetized component 1 and is used to drive the magnetized component 1 to move toward or away from the charging module 5. Each magnetized component 1 may correspond to a driver 4, and the movement of each magnetized component 1 may be driven separately; or all magnetized components 1 may be driven by a driver 4. The driver 4 may be a conventional motor capable of driving linear motion, an electric telescopic push rod mechanism, or a hydraulic telescopic push rod mechanism.

[0044] Preferably, the driver 4 is provided with a driving rod 41, and the driving rod 41 is connected to the magnetic receiving part 1 closest to the charging module 5, and a connecting rod 42 (attached) is provided between any two adjacent magnetic receiving parts 1. Figure 5 (indicated by red lines in the figure), so that only one driver is required to enable all the magnetized parts 1 to move synchronously. Between any two adjacent magnetized parts 1, one end of the connecting rod 42 is connected to the second fitting surface 12 of the magnetized part 1 relatively close to the charging module 5, and the other end passes through the heat-conducting part 2 between the two magnetized parts 1, and is connected to the first fitting surface 11 of the magnetized part 1 relatively far away from the charging module 5. Accordingly, the heat-conducting part 2 located between the two magnetized parts 1 is provided with an avoidance hole to avoid spatial interference with the connecting rod 42, while also ensuring the normal movement of the magnetized parts 1.

[0045] The heat dissipation device includes a heat-insulating shell (not shown), the heat dissipation device is arranged in the heat-insulating shell, the heat-conducting member 2 is fixedly connected to the inner wall of the heat-insulating shell, and the inner wall of the heat-insulating shell is provided with at least one sliding rail, one end of the sliding rail is connected to the heat-conducting member 2, and the other end extends in the direction close to the charging module 5, and the magnetic receiving member 1 can move along the sliding rail. Thus, on the one hand, the heat dissipation device can "transport" the heat of the charging module 5 to the low-temperature part in a directional manner to prevent the heat from escaping to the surroundings of the heat dissipation device, and on the other hand, the magnetic receiving member 1 can reciprocate relatively smoothly in the heat-insulating shell, which can effectively prevent the heat dissipation device from generating noise or vibration during operation.

[0046] Specifically, for the sliding rail set between the charging module 5 and the heat-conducting part 2 closest to the charging module 5, one end of the sliding rail is connected to the heat-conducting part 2, and the other end extends toward the charging module 5 and extends to the vicinity of the charging module 5. It is recommended not to contact the charging module 5; for the sliding rail set between any two adjacent heat-conducting parts 2, one end of the sliding rail is connected to one heat-conducting part 2, and the other end is connected to another heat-conducting part 2.

[0047] The charging pile includes a central controller, and the charging module 5 is provided with a temperature sensor, and the central controller is connected to the temperature sensor for real-time acquisition of the temperature T1 of the charging module 5. The charging pile may also be provided with an ambient temperature sensor for real-time acquisition of the external ambient temperature.

[0048] In addition, the charging pile includes an AC power supply and a charging gun, and the charging module 5 is provided with a first converter and a second converter. The AC power supply is connected to the input end of the first converter through a charging main line group 6, and the output end of the first converter is connected to the charging gun; the input end of the second converter is connected to the charging main line group 6 through a secondary line group 7, and the output end of the second converter is connected to the magnetic field generator 3. Therefore, in addition to the modification of the additional heat dissipation device in the conventional charging pile, the present application can also modify the charging line of the conventional charging pile. On the basis of maintaining the existing charging line structure, the secondary line group 7 and the second converter connected in parallel with the first converter are additionally provided. On the basis of not affecting normal charging, the intermittent operation of the magnetic field generator 3 is powered by the charging pile itself. Among them, the first converter and the second converter are both conventional AC-DC converters, which input AC power from their input ends and can output DC power of specific specifications from their output ends. The central controller can be connected to the charging gun to obtain whether the charging gun is connected to the electric vehicle.

[0049] Preferably, the charging main line group 6 is provided with a first switch 61, the connection point between the sub-line group 7 and the charging main line group 6 is located between the first switch 61 and the first converter, and the sub-line group 7 is provided with a second switch 71, so that during the charging process of the charging pile, the intermittent operation of the magnetic field generator 3 is achieved by intermittently opening and closing the second switch 71.

[0050] Furthermore, the output end of the second converter is connected to the magnetic field generator 3 through the third line 8, and the output end of the second converter is connected to the driver 4 through the fourth line 9, and the third line 8 is provided with a third switch 81. Thus, the intermittent operation of the magnetic field generator 3 and the intermittent movement of the magnetic receiving part 1 can be realized respectively without interfering with the normal charging of the charging pile. Among them, the central controller is connected to the first switch 61, the second switch 71, and the third switch 81, and is used to control the opening and closing of the corresponding switches.

[0051] On this basis, the present application further proposes a charging control method for a charging pile, comprising:

[0052] S1, obtaining a charging start signal, closing the first switch 61, and performing a normal charging process;

[0053] The charging start signal may be a user pressing a charging start button, or clicking to start charging on an app of a smart terminal.

[0054] Preferably, step S1 includes: obtaining a charging start signal to determine whether the charging gun is normally connected to the electric vehicle; if so, closing the first switch 61 and proceeding to step S2; if not, reminding that the charging gun is abnormally connected.

[0055] S2, real-time detection of the temperature T1 of the charging module 5;

[0056] S3, determine whether T1 is greater than the first preset value K1; if so, proceed to step S4; if not, return to step S2;

[0057] Among them, since the performance and safety requirements of charging piles and charging modules 5 of different specifications are often different, K1 in this application is a preset temperature value, which is not specifically limited in this application, and is only exemplified by individual numbers, for example: K1 is about 40°C. Correspondingly, when T1≤K1, or in the process of returning to step S2, regardless of whether the heat dissipation device is in the running state, the heat dissipation device is maintained or adjusted to the shutdown state, and the second switch 71 and the third switch 81 are both disconnected.

[0058] S4, close the second switch 71, keep the third switch 81 open, the driver 4 drives the magnetic receiving member 1 to move to the maximum position in the direction close to the charging module 5, and count the closing time P1 of the second switch 71;

[0059] In the state of step S4 , the magnetic receiving component 1 is in contact with the charging module 5 or the heat conducting component 2 , and can absorb the heat carried by the charging module 5 or the heat conducting component 2 .

[0060] S5, determine whether P1 is greater than the first time length Q1; if so, reset P1 to zero and proceed to step S6; if not, maintain the current state and re-execute step S5;

[0061] S6, the driver 4 drives the magnetic component 1 to move to the maximum position in the direction away from the charging module 5, and closes the third switch 81 at the same time, the magnetic field generator 3 provides a magnetic field to the magnetic component 1, and the closing time P2 of the third switch 81 is timed;

[0062] S7, determine whether P2 is greater than the second time length Q2; if so, reset P2 to zero and return to step S2; if not, maintain the current state and re-execute step S7.

[0063] Among them, the first duration Q1 and the second duration Q2 are both preset time data, which will be affected by multiple factors such as thermal conductivity of different materials, component size specifications, and bonding surface area. This application does not make specific limitations on its specific data, but only uses individual numbers as examples, for example: Q1 is about 5 minutes, and Q2 is about 3 minutes.

[0064] Therefore, the present application, through the charging control method, can automatically adjust the intermittent operation of the magnetic field generator 3 and the intermittent movement of the magnetic receiving component 1 when it is necessary to dissipate heat for the charging module 5 without affecting the normal charging of the charging pile, and can use the charging pile itself to supply power for the intermittent operation of related components, thereby improving the intelligence and automation of the heat dissipation of the charging module 5 by the charging pile during the charging process.

[0065] Since the application scenarios of charging piles vary, in order to further improve the intelligence of the heat dissipation of the charging module 5 by the charging pile during the charging process, the present application further improves step S3.

[0066] Specifically, step S3 includes:

[0067] S31, real-time detection of external environment temperature T2;

[0068] S32, determine whether T2 is less than the first temperature value X1; if so, proceed to step S34; if not, proceed to step S33;

[0069] S33, determine whether T2 is greater than the second temperature value X2; if so, proceed directly to step S4; if not, proceed to step S36;

[0070] S34, determine whether T1 is greater than K1; if so, proceed to step S35; if not, return to step S2;

[0071] S35, judging whether the temperature increase of T1 in unit time is greater than the second preset value K2, or whether T1 is greater than the third preset value K3; if so, proceed to step S4; if not, return to step S2;

[0072] S36, determine whether T1 is greater than K1 and the sum of T1 and T2 is greater than a fourth preset value K4; if so, proceed to step S4; if not, return to step S2.

[0073] Among them, X1<X2, K3>K1. It should be additionally explained that the second preset value K2 is the temperature change value per unit time, and this application mainly reflects the temperature rise. Since the performance and safety requirements of charging piles and charging modules 5 of different specifications are often different, X1, X2, K1, K2, K3, and K4 in this application are all preset temperature data. This application does not make specific limitations, but only uses individual numbers as examples. For example: X1 is 5°C, X2 is 25°C, K1 is 40°C, K2 is 20°C / min, K3 is 60°C, and K4 can be equal to K3, or it can be other temperature values.

[0074] Correspondingly, in the process of returning to step S2, no matter whether the heat dissipation device is in the running state or not, the heat dissipation device is kept or adjusted to the shutdown state, and the second switch 71 and the third switch 81 are both disconnected.

[0075] Specifically, when T2 is less than X1, it can be regarded as that the external environment temperature is low (such as winter), and the low temperature environment can better suppress the temperature rise of the charging module 5. Accordingly, even if T1>K1, there is no need to start the heat dissipation device immediately. The temperature change of T1 or whether T is greater than K3 can be used to determine whether to start the heat dissipation device. Through the two-level judgment process and the corresponding multi-condition analysis, unnecessary starting of the heat dissipation device at low ambient temperature can be avoided, and frequent starting and stopping of the heat dissipation device can be effectively avoided, which is also beneficial to improve the accuracy of the heat dissipation regulation of the charging module 5 by the charging pile during the charging process.

[0076] When T2 is greater than X2, it can be considered that the external environment temperature is high (such as in summer), and the heat dissipation device is directly started to "transfer" the heat of the charging module 5 to the low temperature part in time, and to suppress the temperature rise trend of the charging module 5 in time and as early as possible, avoiding the lagging operation of "dissipating heat after the temperature reaches a certain level".

[0077] When X1≤T2≤X2, the external ambient temperature can be regarded as suitable (normal temperature, such as spring and autumn). In addition to considering that T1 is greater than K1, the present application further combines T2 to perform temperature compensation on T1, and restarts the heat dissipation device when T1+T2>K4, so that when the external ambient temperature is slightly lower, the heat dissipation can be appropriately delayed, and when the external ambient temperature is slightly higher, the heat dissipation can be appropriately started in advance, so that in the range of suitable ambient temperature, the heat dissipation device can be intelligently controlled in combination with the current external ambient temperature, which is also beneficial to improve the accuracy of the heat dissipation control of the charging module 5 by the charging pile during the charging process.

[0078] In the present invention, any charging pile may include the technical solution related to the charging pile described in this embodiment; based on the technical solution provided in this application, the charging pile also includes conventional components of the charging pile including a shell, a communication module or a human-computer interaction module. Since these conventional components can refer to the prior art, they will not be described in detail here.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A charging pile, characterized in that: The charging pile comprises a charging module (5) and a heat dissipation device, one end of the heat dissipation device can be attached to or separated from the charging module (5), and the other end is connected to the low-temperature part; the heat dissipation device comprises a magnetic field generator (3) and at least one heat dissipation module; the heat dissipation module comprises a magnetic receiving part (1) and a heat conducting part (2), and in the direction from the charging module (5) to the low-temperature part, the magnetic receiving part (1) and the heat conducting part (2) are arranged in sequence, and the magnetic receiving part (1) can move in a direction close to or away from the charging module (5); the magnetic field generator (3) can provide a magnetic field to the magnetic receiving part (1) in an intermittent manner.

2. A charging pile according to claim 1, characterized in that: In the direction from the charging module (5) to the low-temperature portion, the heat dissipation device comprises at least two heat dissipation modules arranged in sequence.

3. A charging pile according to claim 1, characterized in that: When the magnetized component (1) moves to a maximum position in a direction away from the charging module (5), the magnetic field generator (3) provides a magnetic field to the magnetized component (1); when the magnetized component (1) moves to a maximum position in a direction close to the charging module (5), the magnetic field generator (3) stops providing a magnetic field to the magnetized component (1).

4. A charging pile according to claim 3, characterized in that: The side of the magnetic receiving component (1) facing the charging module (5) is recorded as the first fitting surface (11), and the side of the magnetic receiving component (1) away from the charging module (5) is recorded as the second fitting surface (12); when the magnetic receiving component (1) moves to a maximum position in a direction away from the charging module (5), the second fitting surface (12) of the magnetic receiving component (1) fits with the thermal conductive component (2) closest to the second fitting surface (12); when the magnetic receiving component (1) moves to a maximum position in a direction close to the charging module (5), the first fitting surface (11) of the magnetic receiving component (1) fits with the charging module (5), or fits with the thermal conductive component (2) closest to the first fitting surface (11).

5. A charging pile according to claim 1, characterized in that: A heat sink (51) is provided on one side of the charging module (5) close to the heat dissipation device, and the magnetized component (1) closest to the charging module (5) can be moved to fit with the heat sink (51).

6. A charging pile according to claim 1, characterized in that: The heat dissipation device comprises a driver (4), wherein the driver (4) is connected to the magnetized component (1) and is used to drive the magnetized component (1) to move in a direction approaching or away from the charging module (5).

7. A charging pile according to claim 6, characterized in that: The driver (4) is provided with a driving rod (41), the driving rod (41) is connected to the magnetic receiving component (1) closest to the charging module (5), and a connecting rod (42) is provided between any two adjacent magnetic receiving components (1).

8. A charging pile according to claim 1, characterized in that: The charging pile comprises an AC power source and a charging gun. The charging module (5) is provided with a first converter and a second converter. The AC power source is connected to the input end of the first converter via a charging main line group (6), and the output end of the first converter is connected to the charging gun. The input end of the second converter is connected to the charging main line group (6) via a secondary line group (7), and the output end of the second converter is connected to a magnetic field generator (3). The charging main line group (6) is provided with a first switch (61), and the connection point between the secondary line group (7) and the charging main line group (6) is located between the first switch (61) and the first converter. The secondary line group (7) is provided with a second switch (71).

9. A charging pile according to claim 8, characterized in that: The output end of the second converter is connected to the magnetic field generator (3) via a third line (8), the output end of the second converter is connected to the driver (4) via a fourth line (9), and the third line (8) is provided with a third switch (81).

10. A charging control method for a charging pile, characterized in that: The charging control method is applied to the charging pile according to any one of claims 1 to 9, and the charging control method comprises: S1, obtaining a charging start signal and closing a first switch (61); S2, detecting the temperature T1 of the charging module (5) in real time; S3, determine whether T1 is greater than the first preset value K1; if so, proceed to step S4; if not, return to step S2; S4, closing the second switch (71), keeping the third switch (81) open, the driver (4) driving the magnetic receiving component (1) to move to the maximum position in a direction close to the charging module (5), and timing the closing time P1 of the second switch (71); S5, determine whether P1 is greater than the first time length Q1; if so, reset P1 to zero and proceed to step S6; if not, maintain the current state and re-execute step S5; S6, the driver (4) drives the magnetic receiving component (1) to move to a maximum position in a direction away from the charging module (5), and at the same time closes the third switch (81), the magnetic field generator (3) provides a magnetic field to the magnetic receiving component (1), and the closing time P2 of the third switch (81) is timed; S7, determine whether P2 is greater than the second time length Q2; if so, reset P2 to zero and return to step S2; if not, maintain the current state and re-execute step S7.

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