CN107846047A - A kind of charging pile and cooling control method - Google Patents

Abstract

The invention discloses a charging pile, comprising a pile body, a display module, a control module, a charging circuit module, a charging module and a charging plug, the pile body includes a heat dissipation cabinet, and the heat dissipation cabinet includes a component accommodating part (1), The cooling part (2), the water cooling part (3) and the first fan (51); the water cooling part (3) and the first fan (51) are under the control of the control module, according to the preset rules, The heat dissipation part (2) is air-cooled or (and) water-cooled to dissipate heat. The beneficial effects of the present invention are: (1) Different heat dissipation methods are adopted for different heating conditions, and the heat dissipation methods are diverse. (2) Further reduce power consumption.

Description

A charging pile and heat dissipation control method

technical field

The invention relates to the field of heat dissipation of charging piles, in particular to a charging pile and a heat dissipation control method.

Background technique

The function of the charging pile is similar to the refueling machine in the gas station. It can be fixed on the ground or wall, and installed in the parking lot or charging station of public buildings and residential areas. It can charge various types of electric vehicles according to different voltage levels. The input end of the charging pile is directly connected to the AC grid, and the output end is equipped with a charging plug for charging the electric vehicle. Charging piles generally provide two charging methods: conventional charging and fast charging. People can use a specific charging card to swipe the card on the human-computer interaction interface provided by the charging pile to perform corresponding charging methods, charging time, and cost data printing. The display screen of the charging pile can display data such as charging amount, cost, and charging time.

Since the charging pile is a high-power energy conversion device, a large amount of heat will be generated inside the charging pile during charging. If the heat cannot be effectively discharged, it will affect the service life of the charging pile components, and even cause safety hazards such as fire and explosion. . Generally, the heating element in the charging pile is combined with the radiator, and the radiator is used to dissipate the heat on the heating element to dissipate heat from the charging pile.

The invention of the application number 201110424870.8 discloses a compound heat sink for power modules and a compound heat sink assembly. The compound heat sink includes a base plate, a first heat dissipation unit and a second heat dissipation unit. At least one power module is arranged on the side; the first heat dissipation unit is a first heat dissipation fin group composed of a plurality of spaced apart heat dissipation fins, and the first heat dissipation fin group is located on the other side of the substrate; the second heat dissipation unit Including a plurality of heat pipes and a second heat sink group, the heat pipes include an evaporation section, an adiabatic section and a condensation section, the evaporation section is arranged in the base plate and close to the power module; the heat insulation section is located between the evaporation section and the condensation section An extension part and a bent part are included between the segments; a second cooling fin group is arranged on the condensing segment. The composite radiator of the invention only uses the heat pipe heat dissipation technology to take out the heat in the radiator, and the heat dissipation method is single. When the electrical components generate a lot of heat, the heat dissipation effect is poor. Secondly, this method needs to use fans for heat dissipation all the time, which consumes a lot of electric energy.

Contents of the invention

An object of the present invention is to provide a charging pile and a heat dissipation control method, so that the charging pile has a comprehensive heat dissipation effect of air-cooled and water-cooled electrical components that generate heat inside the charging pile, and saves power consumption.

Specifically, the present invention is achieved through the following technical solutions:

A charging pile, comprising a pile body, a display module, a control module, a charging circuit module, a charging module and a charging plug, the pile body includes a heat dissipation cabinet, and the heat dissipation cabinet includes a component accommodating part (1), a heat dissipation part, a water cooling The water-cooling part and the first fan; the water-cooling part and the first fan are controlled by the control module to perform air-cooling or (and) water-cooling and heat dissipation on the heat dissipation part according to preset rules.

The component accommodating portion includes a cabinet body, a first cabinet bottom space, and a second cabinet bottom space; the cabinet body is a hyperbolic cooling tower structure with a lower width, a middle narrower, and an upper width, and the bottom of the cabinet has Air inlet; the heat dissipation part is arranged inside the cabinet; the water cooling part is arranged in the second cabinet bottom space for water cooling and heat dissipation of the heat dissipation part; the first fan is arranged inside the first cabinet bottom space , for performing forced air cooling on the heat dissipation part.

There are two heat dissipation parts, which are respectively used for setting the rectification module and the power conversion module of the charging pile; the heat dissipation parts are arranged on the side wall of the inner bottom of the cabinet.

The radiating part includes a radiating body, a radiating plate, a radiating cover and a circuit board; the circuit board is provided with a rectifier circuit module or a power conversion circuit module; the circuit board is arranged on one side of the radiating plate; the radiating body is a heat sink unit having a plurality of heat sinks, the plurality of heat sinks are arranged at positions spaced apart from each other by a predetermined distance, the heat sink has an installation space; the heat dissipation cover is arranged on the heating element of the circuit board, and The installation space in the heat dissipation body is configured so that the heat dissipation cover can be clamped on the installation space.

There is a through hole penetrating through the heat dissipation plate inside the heat dissipation plate for allowing the cooling water pipeline to pass through the heat dissipation plate for heat absorption.

The water-cooling part includes a cooling water heat exchanger, a water pump, a water tank, a second fan and a cooling water pipeline; the water pump is a power-controllable water pump; the cooling water pipeline protrudes from the water tank and passes through the two cooling parts in parallel, Then pass through the cooling water heat exchanger and the water pump in turn to form a cooling water circulation channel.

The cooling water heat exchanger includes a plurality of cooling water channels arranged in sequence and controllable three-way valves corresponding to the cooling water channels; each controllable three-way valve has a water inlet valve port, a water outlet valve port and a water guide valve. The outlet valve port of each controllable three-way valve is connected with the water inlet of the water pump; the water inlet valve port of the first controllable three-way valve is connected with the cooling water pipeline; the outlet of the last cooling water channel The water port is connected to the water inlet of the water pump; the water inlet of each of the remaining heat dissipation channels is connected to the water guide valve port of the corresponding controllable three-way valve, and the water outlet of the heat dissipation channel is connected to the next controllable three-way valve water inlet valve.

A method for controlling heat dissipation of a charging pile, using the charging pile described above, the method comprising:

Step 1: start charging;

Step 2: using natural air cooling to cool down the heat dissipation part;

Step 3: Judging whether the natural air cooling method is used to cool down the heat dissipation part is invalid, if yes, then perform step 4, if not, then perform step 2;

Step 4: using water cooling to cool down the cooling part, and adjusting the temperature of the cooling water in real time;

Step 5: Judging whether the cooling of the heat dissipation part by water cooling is invalid, if yes, then perform step 6, if not, then perform step 7;

Step 6: Cool down the heat dissipation part by means of forced air cooling, and then perform step 8;

Step 7: Determine whether to continue water cooling, if yes, perform step 4, if not, perform step 2;

Step 8: Judging whether the cooling of the heat dissipation part by forced air cooling is invalid, if yes, then perform step 9, if not, then perform step 10;

Step 9: shutdown alarm;

Step 10: Judging whether to continue forced air cooling, if yes, go to step 6, if not, go to step 7.

The judging whether it is invalid to use natural air cooling to cool down the heat dissipation part includes:

If it is judged that the temperature of the heat dissipation part is higher than the first threshold temperature after the preset period of time after charging, it is determined that the cooling of the heat dissipation part by natural air cooling fails; if the temperature of the heat dissipation part is lower than the first threshold temperature, then the The current moment is used as the starting point of time to determine whether the temperature of the heat dissipation part is lower than the first threshold temperature after a preset period of time, and to determine whether the cooling is invalid or not in a cycle;

The judging whether the water cooling method is used to cool the heat dissipation part is invalid, including:

If it is determined that the temperature of the heat dissipation part is higher than the first threshold temperature after the preset period of time after the water cooling method is adopted, it is determined that the water cooling method is used to cool the heat dissipation part. If the temperature of the heat dissipation part is lower than the first threshold temperature, then The current moment is used as the starting point of time to determine whether the temperature of the heat dissipation part is lower than the first threshold temperature after a preset period of time, and to determine whether the cooling is invalid or not in a loop;

The judging whether it is invalid to use the forced air cooling method to cool the heat dissipation part includes:

If it is determined that the temperature of the heat dissipation part is higher than the first threshold temperature after the preset time period after the forced air cooling method is adopted, it is determined that the forced air cooling method is used to cool the heat dissipation part and fails; if the temperature of the heat dissipation part is lower than the first threshold temperature , then use the current moment as the time starting point to judge whether the temperature of the heat dissipation part is lower than the first threshold temperature after a preset period of time, and then loop to determine whether the cooling is invalid.

Said judging whether to continue water cooling includes:

Judging whether the current temperature of the heat dissipation part is less than a second threshold temperature, if it is less than, it is judged that the water cooling is not continued, and if it is higher, it is judged that the water cooling is continued, wherein the second threshold temperature is less than the first threshold temperature;

The judgment whether to continue forced air cooling includes:

Judging whether the current temperature of the heat dissipation part is less than a third threshold temperature, if it is less than, it is judged that the forced air cooling is not continued, and if it is higher, it is judged that the forced air cooling is continued, wherein the third threshold temperature is lower than the first threshold temperature.

The beneficial effects of the present invention are: (1) Different heat dissipation methods are adopted for different heating conditions, and the heat dissipation methods are diverse. (2) Further reduce power consumption.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of a cooling cabinet for a charging pile provided by the present invention;

Figure 2 is a top view of the structure of the radiator and the radiator cover;

Fig. 3 is the structural representation of cooling water heat exchanger;

Fig. 4 is a schematic flow chart of a heat dissipation control method for a charging pile heat dissipation cabinet provided by the present invention;

Fig. 5 is a schematic flowchart of a cooling water cooling method for a cooling cabinet of a charging pile provided by the present invention.

Explanation of reference signs

In order to further clearly illustrate the structure of the present invention and the connection relationship between the components, the following reference signs are given and explained.

1. Component accommodation part; 11. Cabinet body; 12. Cabinet top; 13. Space at the bottom of the first cabinet; 14. Space at the bottom of the second cabinet; 15. Air inlet; 22, heat dissipation plate; 23, heat dissipation cover; 24, circuit board; 3, water cooling unit; 31, cooling water heat exchanger; 32, water pump; 311, heat dissipation water channel; 312, controllable three-way valve; 3121, inlet Water valve port; 3122, water outlet valve port; 3123, water guide valve port; 33, water tank; 34 second fan; 35, cooling water pipeline; 41, first temperature sensor; 42, second temperature sensor; 51, the first A fan.

Through the description of the above reference numerals, combined with the embodiments of the present invention, the technical solution of the present invention can be more clearly understood and described.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

The terminology used in the present invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein and in the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in the present invention to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present invention, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "at" or "when" or "in response to a determination."

The present invention will be described in detail below by way of examples.

A charging pile, including a pile body, a display module, a control module, a charging circuit module, a charging module and a charging plug, the pile body includes a cooling cabinet, as shown in Figure 1, the cooling cabinet includes a component accommodating part 1, The heat dissipation part 2 and the water cooling part 3; the component accommodating part 1 includes a cabinet body 11, a cabinet top 12, a first cabinet bottom space 13 and a second cabinet bottom space 14, and the second cabinet bottom space 14 is located in the first cabinet Below the bottom space; the cabinet body 11 is a hyperbolic cooling tower structure with a lower width, a middle narrower, and an upper width, and an air inlet 15 is provided at the bottom of the cabinet body 11 .

The heat dissipation part 2 is arranged on the side wall of the inner bottom of the cabinet body 11. Specifically, there are two heat dissipation parts 2, and they are arranged opposite to each other on the side wall of the cabinet body 11. In actual use, the The rectification module and the power conversion module of the charging pile are respectively installed on the two heat dissipation parts 2, that is, the two main heating parts of the charging pile are dissipated separately. Compared with the traditional heat dissipation method, the separation of the rectification module and the power conversion module Module heat dissipation, so that the temperature and heat dissipation of the two modules reduce mutual influence, and the heat dissipation effect is better. Specifically, the heat dissipation part 2 includes a heat dissipation body 21, a heat dissipation plate 22, a heat dissipation cover 23 and a circuit board 24; a rectifier circuit module or a power conversion circuit module is welded on the circuit board 24, and the circuit board 24 is arranged One side of the plate 22; as shown in Figure 2, the heat sink 21 is a heat sink unit with a plurality of heat sinks 211, and the plurality of heat sinks are arranged at a predetermined distance apart from each other, the heat sink There is an installation space in it; the heat dissipation cover 23 is arranged on the heating element of the circuit board 24, and the installation space in the heat sink 21 is set so that the heat dissipation cover 23 can be clamped on the installation space.

The heat dissipation plate 22 is a plate made of heat dissipation material with a certain thickness, such as copper and aluminum, and has a through hole running through the heat dissipation plate 22 inside, for the cooling water pipeline 35 to pass through the heat dissipation plate 22 to absorb heat; in one embodiment of the present invention, the heat dissipation plate 22 has a plurality of through holes, and a cooling water pipeline 35 passes through each through hole. In order to further enhance the heat dissipation effect, the gap between the through holes, that is, between the cooling water pipeline 35 and the heat dissipation plate 22 is filled with a thermally conductive and insulating paste material.

The circuit board 24 is arranged on one side of the heat dissipation plate 22, and on the heating components or the heating circuit on the circuit board 24, a heat dissipation cover 23 is arranged, even if the heat dissipation cover is covered on the heating components or the heating circuit of the circuit board, so as to dissipate heat The cover 23 further absorbs the heat emitted by the heating components or the heating circuit, and the heat dissipation body 21 is arranged on the heat dissipation plate 22 at the same time, and on the heat dissipation body 21, an installation space is provided to suit the position of the heat dissipation cover 23, So that the heat dissipation cover 23 on the circuit board 24 can be at the same height as the heat dissipation body 21, that is to say, the effect of the cooling fins of the heat dissipation body 21 around the heat dissipation cover 23 can be reached, so that the heat on the heat dissipation cover can be quickly dissipated to on the entire radiator 21.

As shown in Figure 1, the water cooling unit 3 includes a cooling water heat exchanger 31, a water pump 32, a water tank 33, a second blower fan 34, and a cooling water pipeline 35, wherein the water pump 32 is a power-controllable water pump; In the space 14 at the bottom of the second cabinet, a cooling water heat exchanger 31, a water pump 32, a water tank 33 and a second fan 34 are provided, and the cooling water pipeline 35 protrudes from the water tank 33 and passes through the cooling plates 22 of the two cooling parts in parallel. , and then pass through the cooling water heat exchanger 31 and the water pump 32 in turn to form a cooling water circulation channel; the second fan 34 is arranged on the side wall of the second cabinet bottom space 14 close to the cooling water heat exchanger 31 . At the bottom of the water tank 33, a first temperature sensor 41 for monitoring the water temperature of the water tank is provided; on the side wall of the cabinet 11, a second temperature sensor 41 for monitoring the ambient air temperature of the cooling unit 2 is set at a position close to the cooling unit 2 sensor.

The charging pile also has a controller (not shown in the figure), which can control the operation of electronic equipment such as a water pump, a controllable three-way valve, and a temperature sensor.

Since the cabinet 11 is a hyperbolic cooling tower structure, when the air at the bottom of the cabinet 11 heats up with the heating of the heat-generating device, an ascending airflow can be formed. Negative pressure, at this time, the external low-temperature gas (lower temperature than the gas around the heating part) is sucked into the bottom space of the cabinet 11 through the air inlet 15, and so on and forth, forming a The natural wind path takes away the heat around the cooling part. Compared with traditional charging piles that rely on fans to generate wind for cooling, it can save a lot of power to drive fans.

In some cases, such as when the charging pile is charged with high power or the charging time is too long, the heating of the heat dissipation part is serious, and when the air cooling in the natural air path cannot dissipate heat in time and effectively, the water pump 32 can be started, and the cooling water pipeline 35 When the cooling water flows through the hot plate 22, it will take away the heat on the heat sink 22. Unlike the traditional water cooling method, after the cooling water absorbs heat and before entering the water tank, it will be cooled The cooling of the water heat exchanger 31 reduces the temperature of the cooling water heated up after absorbing heat, so that the cooling of the next cycle can be performed.

Specifically, as shown in FIG. 3 , the cooling water heat exchanger 31 includes a plurality of cooling water channels 311 arranged in sequence and controllable three-way valves 312 corresponding to the cooling water channels 311 one by one. In a specific embodiment, the cooling water heat exchanger 31 has five cooling water channels 311 and five controllable three-way valves 312, and each controllable three-way valve 312 has a water inlet valve port 3121, a water outlet valve port 3122 and a water outlet valve port 3122. Water guide valve port 3123, the water outlet valve port 3122 of each controllable three-way valve 312 is connected with the water inlet port of the water pump 32; the water inlet valve port 3121 of the first controllable three-way valve 312 is connected with the cooling water pipeline 35 connected; the water outlet of the last heat dissipation water channel 311 is connected with the water inlet of the water pump 32; the water inlet of each of the other heat dissipation water channels 311 is connected with the water guide valve port 3123 of the corresponding controllable three-way valve 312, and The water outlet of the cooling channel 311 is connected to the water inlet valve port 3121 of the next controllable three-way valve 312 . Each controllable three-way valve 312 is controlled by a control device and has two conduction states. In this patent application document, the "open" state of the controllable three-way valve 312 is defined as: conduction between the water inlet valve port 3121 and the water conduction state. The passage between the valve ports 3123, and cut off the passage between the water inlet valve port 3121 and the water outlet valve port 3122; define the "closed" state of the controllable three-way valve 312 as: cut off the water inlet valve port 3121 and the water diversion valve The passage between the ports 3123, and the passage between the water inlet valve port 3121 and the water outlet valve port 3122.

The second fan 34 is arranged on the side wall of the second cabinet bottom space 14 close to the cooling water heat exchanger 31 , and is used for air cooling the cooling water flowing through the cooling water channel 311 . When the temperature of the cooling water is sufficient to continue cooling the radiator, all the controllable three-way valves 312 can be controlled to be closed; when it is detected that the temperature of the cooling water is not enough to cool the radiator, it can be opened according to preset rules The partially controllable three-way valve 312 allows the cooling water to pass through one or more cooling water channels 311 for cooling, so as to lower the temperature of the cooling water. For the traditional cooling water system, when the cooling water temperature rises, usually it can only be shut down for manual cooling water replacement, but with the method of the present invention, the cooling water can be cooled while the equipment is being cooled; and, this The way of cooling the cooling water is to control the controllable three-way valve 312 to increase the heat dissipation water channel 311. Compared with the traditional technical solution of increasing the fan speed to obtain greater wind power to enhance the cooling effect, the second The blower 34 can obtain a better cooling effect while maintaining the same rotational speed, thereby further saving power resources. Secondly, for the water pump that drives the water flow in the water flow path, the more winding the path of the water flow path, the greater the operating power of the water pump. Based on this fact, using the cooling water heat exchanger described in the present invention structure, the controllable power water pump is adopted in the embodiment of the present invention. When the number of open controllable three-way valves is less, the operating power of the water pump is controlled to be smaller. In this way, the temperature of the cooling water is reduced to the required The effect of temperature; for example, when the controller judges that the cooling water does not need to be cooled, the controllable three-way valves are all closed, and the operating power of the controllable power water pump is the minimum. As the number of controllable three-way valves opens, the corresponding Increase the operating power of the controllable power. Further, when the charging pile is in a non-charging state, all of the controllable three-way valves can be individually controlled to be in an open state, and the water pump and the second fan 34 can be kept running, so as to quickly cool down the cooling water, so that Use it for cooling the next time you charge it.

In the space 13 at the bottom of the first cabinet, a first fan 51 with a controllable wind speed is provided, which is used to force the air flow into the space of the cabinet body 11 in extreme cases, that is, when the temperature of the heat dissipation part is too high. And upward air blowing further strengthens the circulation of hot air in the cabinet body 11 .

Correspondingly, the present invention also provides a heat dissipation control method for the cooling cabinet of the charging pile, as shown in FIG. 4 , the method includes:

S101: start charging.

S102: Cool down the heat dissipation part by natural air cooling.

Specifically, the controller turns off the water pump 32 and the second fan 34, cooperates with the hyperbolic cooling tower structure of the cabinet 11, the hot air at the bottom of the cabinet 11 rises, and the cold air outside the air inlet 15 enters the inside of the cabinet 11, forming a natural cycle. The wind plays the purpose of cooling the cooling part.

S103: Determine whether natural air cooling is invalid for cooling the heat dissipation part, if yes, perform S104, and if not, perform S102.

Specifically, it can be judged whether the use of natural wind to cool the heat dissipation part is invalid by judging the cooling of the heat dissipation part within a certain period of time after charging. For example, after charging for 5 minutes, the temperature of the heat dissipation part is higher than the first threshold temperature, that is In order to use natural air cooling to cool down the heat dissipation part. If the temperature of the radiating part is lower than the first threshold temperature, the current time is used as the starting point of time to determine whether the temperature of the radiating part is lower than the first threshold temperature after 5 minutes, and then loop to determine whether the cooling fails.

S104: Cool down the heat dissipation part by water cooling, and adjust the temperature of the cooling water in real time.

Specifically, run the water pump so that the cooling water stored in the water tank 33 circulates in the cooling water pipeline 35, and the cooling water takes away the heat in the heat dissipation part through the cooling plate 22; as the cooling water continuously circulates and takes away the heat, the cooling water itself heats up , the cooling effect drops. In order to avoid this phenomenon, the cooling water can be cooled according to the real-time temperature of the cooling water and the real-time temperature of the cooling part. For the cooling water heat exchanger 31 shown in FIG. Under the premise that the internal temperature is not higher than 100°C, when the cooling water temperature is 50% to 55% of the heat dissipation portion temperature, the first controllable three-way valve 312 is opened; when the cooling water temperature is 50% to 55% of the heat dissipation portion temperature 55%~60%, the second controllable three-way valve 312 is opened; when the cooling water temperature is 60%~65% of the cooling temperature, the third controllable three-way valve 312 is opened ; When the cooling water temperature is 65%~70% of the temperature of the radiator, the fourth controllable three-way valve 312 is opened; when the temperature of the cooling water is 70%~75% of the temperature of the radiator, the fifth Each of the controllable three-way valves 312 is opened.

S105: Determine whether the cooling of the heat dissipation part by water cooling is invalid, if yes, perform S106, and if not, perform S107.

Specifically, it can be judged whether the cooling of the heat dissipation part by water cooling is invalid by judging the temperature drop of the heat dissipation part within a certain period of time. Water cooling is used to cool down the heat dissipation part to fail; if the temperature of the heat dissipation part is lower than the first threshold temperature, then use the current time as the starting point of time to judge whether the temperature of the heat dissipation part is lower than the first threshold temperature after 5 minutes, and perform cooling in a cycle Determination of failure.

S106: Cool down the heat dissipation part by means of forced air cooling, and then execute S108.

Specifically, the first fan is turned on.

S107: Determine whether to continue water cooling, if yes, execute S104, if not, execute S102.

Specifically, it is judged whether the current temperature of the heat dissipation part is lower than the second threshold temperature, if it is lower, it is judged that the water cooling is not to be continued, and if it is higher, it is judged that the water cooling is continued, wherein the second threshold temperature is lower than the first threshold temperature.

S108: Determine whether the cooling of the heat dissipation part by means of forced air cooling fails, if yes, perform S109, and if not, perform S110.

Specifically, it can be judged whether the cooling of the heat dissipation part by forced air cooling is invalid by judging the cooling of the heat dissipation part within a certain period of time. For example, after the first fan is turned on for 5 minutes, the temperature of the heat dissipation part is higher than the first threshold temperature , that is, it is determined that the natural air cooling method is used to cool down the heat dissipation part, and if the temperature of the heat dissipation part is lower than the first threshold temperature, then the current time is used as the starting point of time to determine whether the temperature of the heat dissipation part is lower than the first threshold temperature after 5 minutes. Threshold temperature, loop to determine whether cooling is invalid.

S109: shutdown alarm.

S110: Determine whether to continue forced air cooling, if yes, execute S106, if not, execute S107.

Specifically, it is judged whether the current temperature of the heat dissipation part is lower than the third threshold temperature, if it is lower, it is judged that the forced air cooling is not continued, and if it is higher, it is judged that the forced air cooling is continued, wherein the third threshold temperature less than the first threshold temperature.

When the charging pile finishes charging, the temperature of the cooling water may still be kept at a relatively high temperature. If the natural cooling method is used, it will be too time-consuming, and if the manual water change method is used, the operation will be more cumbersome. At this time, you can pass Turn on the water pump, and turn on all the controllable three-way valves and the second fan to quickly cool down the cooling water, so that the cooling water is convenient for cooling when charging next time.

As shown in Figure 5, the steps for cooling down the cooling water are as follows:

S201: The controller receives a cooling water cooling command.

S202: Run the water pump, set all the controllable three-way valves in an open state, and run the second fan.

S203: Determine whether the temperature of the cooling water has dropped to a preset cooling water temperature value, if yes, perform S204, and if not, perform S202.

S204: Stop the operation of the water pump, set all the controllable three-way valves in a closed state, and stop the operation of the second fan.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (10)

1. A charging pile, comprising a pile body, a display module, a control module, a charging circuit module, a charging module and a charging plug, the pile body includes a heat dissipation cabinet, and it is characterized in that the heat dissipation cabinet includes a component accommodating part (1 ), the heat dissipation part (2), the water cooling part (3) and the first fan (51); the water cooling part (3) and the first fan (51) are under the control of the control module, according to preset rules, Air cooling or (and) water cooling is performed on the heat dissipation part (2). 2. The charging pile according to claim 1, characterized in that, the component accommodating part (1) comprises a cabinet body (11), a first cabinet bottom space (13) and a second cabinet bottom space (14); The cabinet (11) is a hyperbolic cooling tower structure with a lower width, a middle narrower, and an upper width, and an air inlet (15) is provided at the bottom of the cabinet (11); body (11); the water-cooling part (3) is arranged in the second cabinet bottom space (14), and is used for water-cooling and dissipating the heat dissipation part (2); the first fan (51) is arranged in the second Inside a space (13) at the bottom of the cabinet, it is used for forced air cooling and heat dissipation of the heat dissipation part (2). 3. The charging pile according to claim 2, characterized in that, the heat dissipation part (2) has two, which are respectively used for setting the rectification module and the power conversion module of the charging pile; the heat dissipation part (2) is arranged on On the side wall of the inner bottom of the cabinet body (11). 4. The charging pile according to claim 3, characterized in that, the heat dissipation part (2) comprises a heat dissipation body (21), a heat dissipation plate (22), a heat dissipation cover (23) and a circuit board (24); the The circuit board (24) is provided with a rectifier circuit module or a power conversion circuit module; the circuit board (24) is arranged on one side of the radiator plate (22); the radiator (21) has a plurality of radiator fins (211 ), the plurality of heat sinks are arranged at positions spaced apart from each other with a predetermined distance, and there is an installation space in the heat sink (21); the heat dissipation cover (23) is arranged on the circuit board (24) on the heating element, and the installation space in the radiator (21) is set so that the heat dissipation cover (23) can be clamped on the installation space. 5. The charging pile according to claim 4, characterized in that there is a through hole penetrating through the heat dissipation plate (22) inside the heat dissipation plate (22), for allowing the cooling water pipeline to pass through the heat dissipation plate ( 22), to absorb heat. 6. The charging pile according to claim 2, characterized in that, the water cooling part (3) includes a cooling water heat exchanger (31), a water pump (32), a water tank (33), a second fan (34) and The cooling water pipeline (35); the water pump (32) is a power-controllable water pump; the cooling water pipeline (35) protrudes from the water tank (33), passes through two cooling parts in parallel, and then exchanges heat through the cooling water in turn Device (31), water pump (32), form cooling water circulation channel. 7. The charging pile according to claim 6, characterized in that, the cooling water heat exchanger (31) includes a plurality of cooling water channels (311) arranged in sequence and one-to-one correspondence with the cooling water channels (311) Controllable three-way valve (312); each controllable three-way valve (312) has a water inlet valve port (3121), a water outlet valve port (3122) and a water diversion valve port (3123), and each controllable three-way valve The water outlet valve port (3122) of (312) links to each other with the water inlet of water pump (32); The water outlet of the last heat dissipation water channel (311) is connected with the water inlet of the water pump (32); the water inlet of each of the remaining heat dissipation water channels (311) is connected with the corresponding controllable three-way valve (312) The water diversion valve port (3123), and the water outlet of the cooling channel (311) is connected to the water inlet valve port (3121) of the next controllable three-way valve (312). 8. A method for controlling heat dissipation of a charging pile, characterized in that it is applied to the charging pile according to any one of claims 1 to 6, the method comprising: Step 1: start charging; Step 2: cooling the heat dissipation part by natural air cooling; Step 3: judging whether the natural air cooling method is used to cool down the heat dissipation part is invalid, if yes, then perform step 4, if not, then perform step 2; Step 4: using water cooling to cool down the cooling part, and adjusting the temperature of the cooling water in real time; Step 5: Judging whether the cooling of the heat dissipation part by water cooling is invalid, if yes, then perform step 6, if not, then perform step 7; Step 6: Cool down the heat dissipation part by means of forced air cooling, and then perform step 8; Step 7: Determine whether to continue water cooling, if yes, perform step 4, if not, perform step 2; Step 8: Judging whether the cooling of the heat dissipation part by forced air cooling is invalid, if yes, then perform step 9, if not, then perform step 10; Step 9: shutdown alarm; Step 10: Judging whether to continue forced air cooling, if yes, go to step 6, if not, go to step 7. 9. The method according to claim 8, wherein the judging whether cooling of the radiating part by natural air cooling is invalid includes: If it is judged that the temperature of the heat dissipation part is higher than the first threshold temperature after the preset period of time after charging, it is determined that the cooling of the heat dissipation part by natural air cooling fails; if the temperature of the heat dissipation part is lower than the first threshold temperature, then the The current moment is used as the starting point of time to determine whether the temperature of the heat dissipation part is lower than the first threshold temperature after a preset period of time, and to determine whether the cooling is invalid or not in a cycle; The judging whether the water cooling method is used to cool the heat dissipation part is invalid, including: If it is determined that the temperature of the heat dissipation part is higher than the first threshold temperature after the preset period of time after the water cooling method is adopted, it is determined that the water cooling method is used to cool the heat dissipation part. If the temperature of the heat dissipation part is lower than the first threshold temperature, then The current moment is used as the starting point of time to determine whether the temperature of the heat dissipation part is lower than the first threshold temperature after a preset period of time, and to determine whether the cooling is invalid or not in a loop; The judging whether it is invalid to use the forced air cooling method to cool the heat dissipation part includes: If it is determined that the temperature of the heat dissipation part is higher than the first threshold temperature after the preset time period after the forced air cooling method is adopted, it is determined that the forced air cooling method is used to cool the heat dissipation part and fails; if the temperature of the heat dissipation part is lower than the first threshold temperature , then use the current moment as the time starting point to judge whether the temperature of the heat dissipation part is lower than the first threshold temperature after a preset period of time, and then loop to determine whether the cooling is invalid. 10. The method according to claim 8, wherein the judging whether to continue water cooling includes: Judging whether the current temperature of the heat dissipation part is less than a second threshold temperature, if it is less than, it is judged that the water cooling is not continued, and if it is higher, it is judged that the water cooling is continued, wherein the second threshold temperature is less than the first threshold temperature; The judgment whether to continue forced air cooling includes: Judging whether the current temperature of the heat dissipation part is less than a third threshold temperature, if it is less than, it is judged that the forced air cooling is not continued, and if it is higher, it is judged that the forced air cooling is continued, wherein the third threshold temperature is lower than the first threshold temperature.