Charging pile

Abstract

The utility model provides a charging pile. The charging pile comprises a pile body, a control module, a sensor and a charging gun, the control module is arranged in the pile body; the charging gun is connected with the control module through a first cable; the plurality of sensors are arranged on the first cable according to a preset distance; the control module is connected with the sensors through wires. The temperature change of the cable is effectively monitored, and an accident can be early warned and prevented in advance by monitoring the temperature change.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, in particular to a charging pile. Background Art

[0002] With the development of new energy vehicles, the supporting charging piles have also developed. A large number of charging piles are installed in various parking lots, especially outdoor parking lots.

[0003] Due to concerns about problems such as short circuits and wire aging during charging, which may cause the temperature of the vehicle to be too high and further lead to vehicle spontaneous combustion, existing charging piles usually set temperature sensors at the charging gun heads so that an alarm can be issued and charging can be stopped when the temperature is abnormal.

[0004] However, in addition to vehicle spontaneous combustion, there are other abnormal situations. For example, the wire may be damaged due to long-term dragging, resulting in a smaller cross-section of the energized wire. In the above situations, it may also cause the temperature to rise during charging and lead to vehicle spontaneous combustion. Content of the Utility Model

[0005] In view of the above problems, the present utility model is proposed to provide a charging pile that overcomes or at least partially solves the above problems.

[0006] To solve the above problems, the present utility model discloses a charging pile, including: a pile body, a control module, sensors, and a charging gun; the control module is arranged in the pile body; the charging gun is connected to the control module through a first cable; a plurality of the sensors are arranged on the first cable at a preset distance; the control module and the plurality of sensors are connected through wires.

[0007] Furthermore, it further includes a heat dissipation module; the heat dissipation module includes a first unit arranged inside the pile body and a second unit arranged inside the first cable; the first unit and the second unit are wound and connected at the connection of the first cable and the pile body for heat exchange.

[0008] Furthermore, the heat dissipation module is a liquid cooling module; the first unit includes a primary cooling circuit, and the second unit includes a secondary cooling circuit; the primary cooling circuit and the secondary cooling circuit are spirally wound and connected at the connection of the first cable and the pile body.

[0009] Furthermore, it further includes a display module; the display module is arranged on the surface of the pile body and is electrically connected to the control module.

[0010] Furthermore, it further includes a warning light; the warning light is electrically connected to the control module and is arranged outside the pile body.

[0011] Further, the wire includes an optical fiber data line.

[0012] The utility model has the following advantages:

[0013] By equally dividing the cable of the gun head of the charging pile into several units, arranging temperature sensors in the several units, and monitoring the temperature change of the cable in real time through the temperature sensors, and immediately alarming in case of abnormal temperature, the occurrence of accidents can be better prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of an embodiment of a charging pile of the utility model;

[0015] Figure 2 is a schematic diagram of the structure of the first cable of an embodiment of a charging pile of the utility model;

[0016] Figure 3 is a schematic flow diagram of an embodiment of a charging pile of the utility model.

[0017] In the figure: 100, control module; 200, sensor; 300, display module; 400, warning lamp; 500, first cable; 600, wire; 700, charging gun; 800, pile body; 900, heat dissipation module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the above objects, features and advantages of the utility model more obvious and understandable, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0019] Embodiment 1

[0020] Referring to Figure 1 , a structural block diagram of a charging pile of the utility model is shown, which specifically may include: a pile body 800, a control module 100, a sensor 200 and a charging gun 700; the control module 100 is arranged in the pile body 800, and several of the sensors 200 are arranged on the first cable 500 at a preset distance. It should be noted that referring to Figure 2, the first cable 500 is divided into a number of equidistant units, each unit corresponds to a code, taking 00, 01, 02 as an example, and so on, the code corresponds to the data in the control module 100 one by one, the number of units corresponds to the number of sensors 200, each sensor 200 is arranged at the unit division of the first cable 500, and one sensor 200 only detects the temperature change of one unit, and all the sensors 200 gather the temperature information of all monitored units and transmit it to the control module 100. Moreover, at the same time, the sensor 200 is arranged on the insulating layer of the first cable 500, and does not directly contact the first cable 500, so as to prevent the excessive voltage and current from burning the sensor 200. It should be noted here that the present charging pile is direct current, and the temperature change generated by the common alternating current charging pile is not large and rarely catches fire. The DC charging pile is often used as a fast charging pile due to its high power. The voltage and current of the wire are very large. If it is directly connected to it, the electronic components will be directly destroyed and will not work.

[0021] Among them, the control module 100 needs further explanation. The control module 100 is a control center set inside the pile body 800. The center can control various functions of the charging pile, including charging, power off, alarm and payment for commercial use. The control circuit of the electric vehicle charging pile is mainly completed by an embedded ARM processor. The commercial charging pile has a billing function compared to the home charging pile. Users can swipe their cards to perform user authentication, balance inquiry, billing inquiry and other functions by themselves. It can also provide a voice output interface to realize voice interaction. Users of home charging piles and commercial charging piles can choose 4 charging modes according to the instructions on the LCD display: including charging by time, charging by power, automatic full charge, charging by mileage, etc.

[0022] The electric vehicle charger controller and the concentrator use the CAN bus to exchange data, and the concentrator and the server platform use the wired Internet or wireless GPRS network to exchange data. For safety reasons, the electricity billing and amount data are securely encrypted.

[0023] Further, the control module 100 and several of the sensors 200 are connected by wires 600. It should be noted that the wires 600 mainly play a role in data transmission, transmitting the temperature data monitored by the sensors 200 to the control module 100. The control module 100 compares the temperature differences, which are reflected in two aspects. On the one hand, for the unit with a fault, that is, the wire is damaged and the resistance in the circuit becomes larger, resulting in a large amount of heat being generated in this part, causing the temperature in this area to rise rapidly. The unit with a fault is always a minority compared to the normally operating units. By comparing the data with other units, those with a large gap are determined as abnormal data. On the other hand, a judgment standard is preset. For example, the operating temperature of the charging pile is -30°C to 50°C. Since this application considers the phenomenon of charging spontaneous combustion, that is, the case of too high temperature, 50°C is set as the dangerous temperature. Any value exceeding this temperature is determined as abnormal data. In the control module 100, the data obtained from the sensors 200 is compared with 50°C. Those larger than it are marked as dangerous data, and the control module 100 controls to stop charging. Working from two angles together can accurately grasp abnormal situations. Further, the dangerous temperature can be further subdivided. The range of 10 - 25°C is divided into the optimal charging temperature, and the range of 25 - 50°C is set as a yellow warning. In this temperature range, attention needs to be paid to the subsequent temperature changes in this area. It is most likely to suddenly malfunction one day, which is an area that requires special attention from the staff. However, the charging pile operates normally within this temperature range. The temperature above 50°C is set as a red alarm. As long as there is a data greater than 50°C, the control module 100 immediately cuts off the power. The charging piles in this range are extremely likely to explode and catch fire.

[0024] By arranging several of the sensors 200 on the first cable, the first cable 500 can be divided into grid units, and the problem area can be accurately monitored to prevent accidents from occurring.

[0025] Embodiment 2

[0026] Refer to Figure 1 and Figure 2, further comprising a heat dissipation module 900, wherein the heat dissipation module 900 includes a first unit disposed inside the pile body 800 and a second unit disposed on the first cable 500. It should be noted that the first unit absorbs the heat of the second unit and keeps the second unit at a lower temperature, and further absorbs the heat of the first cable 500. In other words, it absorbs heat. The first unit and the second unit are wound and connected at the connection between the first cable 500 and the pile body 800 for heat exchange to keep the second unit at a certain low temperature. In addition, the heat dissipation module 900 can make the charging pile work better. Many charging piles are installed outdoors. Especially in summer, the charging pile is already very hot even before charging. At the same time, even if the temperature during charging rises due to charging, the heat dissipation module 900 can make it reach the optimal temperature, at which the charging efficiency is the highest and the charging effect is the best. Further, the second unit can also extend to the electrode end inside the charging gun 700. The charging gun 700 also generates heat during use, and the increase in temperature will make the charging effect worse. Therefore, heat dissipation is also required. The second unit disposed inside the charging gun 700 can make the charging gun 700 charge better.

[0027] Further, the heat dissipation module 900 is a liquid cooling module. The first unit is a primary cooling circuit, and the second unit is a secondary cooling circuit. Both the primary cooling circuit and the secondary cooling circuit are composed of liquid cooling pipes and various components. It should be noted that the liquid cooling pipes, similar to electric wires, have no particularity, and the materials and properties used for the primary cooling circuit and the secondary cooling circuit are the same. The primary cooling circuit is arranged inside the pile body 800. The primary cooling circuit is spirally wound twice inside the pile body 800. The first spiral is laid at the connection between the first cable 500 and the pile body 800 and is spirally wound and connected to the secondary cooling circuit to absorb the heat of the secondary cooling circuit and keep it at a certain low temperature. The second spiral can be arranged inside the pile body 800. At the second spiral, a fan is provided to quickly dissipate the heat of the primary cooling circuit and keep the primary cooling circuit at a preset temperature. Through the above process, primary heat dissipation is completed. The secondary cooling circuit spirally winds a liquid cooling pipe around the electrode inside the charging gun 700. The liquid cooling pipe is also arranged in the first cable 500 and maintains a predetermined distance from the conductive member in the first cable 500. At this distance, the liquid cooling pipe can absorb the heat dissipated by the conductive member. The liquid cooling pipe absorbs the heat generated by the charging gun 700 and the first cable 500 to complete secondary heat dissipation. Of course, this liquid cooling method includes but is not limited to this. In addition, semiconductor heat dissipation is also a method, but it is usually arranged at a preset distance from the electrode of the charging gun 700, mainly to absorb the heat of the charging gun 700. Setting it in the first cable 500 has an unsatisfactory effect and may even cause a higher temperature, so it is only set at a preset distance from the electrode of the charging gun 700.

[0028] Further, a display module 300 is also included, which is used to display the charging status, the charging pile status, and alarms. The display module 300 is arranged on the surface of the pile body 800 and is electrically connected to the control module 100. It should be noted that the display module 300 is a large-screen LCD (Liquid Crystal Display) color touch screen. Generally speaking, the display screen of the charging pile needs to meet the following requirements:

[0029] The photosensitive function of the intelligent environment. It automatically adjusts according to the ambient brightness to display the best effect. The light at night is not so dazzling, and the brightness of the display screen is softer.

[0030] The over-high and over-low temperature protection function. Since most of them are installed and used outdoors, the influence of temperature changes needs to be considered. It has a low-temperature automatic temperature adjustment function to avoid frostbite when the liquid crystal display screen does not work. When the high temperature exceeds the normal working limit of the liquid crystal display screen, the backlight is automatically turned off, and when the temperature returns to the normal working temperature, it is automatically turned on to achieve protection.

[0031] With high brightness. Most of them are installed and used outdoors, which is often a strong light environment. It can provide better viewing vision under strong ambient light, but ordinary LCD screens are generally not easy to see images clearly under sunlight.

[0032] In general, LCD color touch screens meet the above requirements. In addition, it should be noted that the same OLED (Organic Light-Emitting Diode) has the following disadvantages compared to LCD:

[0033] The lifespan is usually only 5,000 hours, which is lower than the at least 10,000 hours of LCD. It cannot achieve mass production of large-size screens. There is a problem of insufficient color purity, and it is not easy to display bright and rich colors. When the charging pile alarms, color is needed to distinguish serious situations.

[0034] Therefore, it is most appropriate to choose LCD as the display screen.

[0035] Furthermore, a warning light 400 is also included; the warning light 400 is electrically connected to the control module 100 and is disposed outside the pile body 800. It should be noted that the warning light 400 only sounds an alarm when the sensor 200 detects dangerous data, and at this time, maintenance personnel are required to handle it immediately and remove the alarm.

[0036] Furthermore, the wire 600 is an optical fiber data line, which only transmits data. It should be noted that the optical fiber data line is a fine optical fiber encapsulated in a plastic sheath, so that it can be bent without breaking. Usually, the transmitting device at one end of the optical fiber uses a light emitting diode (LED) or a laser to transmit light pulses to the optical fiber, and the receiving device at the other end of the optical fiber uses a photosensitive element to detect the pulses.

[0037] Example 3

[0038] Combination Figure 3, an explanation of the functions of the entire charging pile is provided. The problem solved by this application is the accident caused by the damage of the wire during the charging of the charging pile. Starting from the perspective of temperature change, if the temperature is different from the set temperature, it means the wire is damaged. Specifically as follows: When not charging, the sensor 200 detects the temperature data of the first cable 500 and transmits it to the control module 100 through the wire. The control module 100 compares this data with the preset temperature range. If it is within the optimal temperature range, charging can be carried out; the heat dissipation module 900 does not work. When it is summer or the surrounding environment is hot and dry, the temperature detected by the sensor 200 is within the working temperature range but not the optimal temperature. At this time, the control module 100 issues an instruction to the heat dissipation module 900 to start heat dissipation, and charging can still be carried out at this time. If the temperature of the charging pile itself exceeds the working temperature at this time, charging is not allowed. At this time, the control module 100 issues an instruction to the heat dissipation module 900 to dissipate heat and issues an alarm at the same time. When charging, the preset temperature of the charging pile before charging is the optimal working temperature at this time. When the sensor 200 constantly detects the temperature change of the first cable 500, when the temperature change of the first cable 500 is greater than the optimal temperature and less than the dangerous temperature, the control module 100 issues an instruction to the heat dissipation module 900 to start heat dissipation; when the temperature change of the first cable 500 is greater than the dangerous temperature, the warning light 400 issues an alarm. Moreover, the control module 100 also has an emergency stop device. Through this device, the control module 100 immediately disconnects the circuit connection, stops the connection with the vehicle, and sends a signal to the staff.

[0039] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or terminal device comprising the element.

[0040] The above has introduced in detail a charging pile provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A charging pile, characterized in that: include: Pile body, control module, sensor and charging gun; The control module is arranged in the pile body; The charging gun is connected to the control module via a first cable; A plurality of the sensors are arranged on the first cable at a preset distance; The control module and the plurality of sensors are connected via wires.

2. The charging pile according to claim 1, characterized in that: Also includes a heat dissipation module; The heat dissipation module includes a first unit arranged inside the pile body and a second unit arranged inside the first cable; The first unit and the second unit are coiled and connected at the connection point between the first cable and the pile body for exchanging heat.

3. The charging pile according to claim 2, characterized in that: The heat dissipation module is a liquid cooling module; The first unit comprises a primary cooling circuit and the second unit comprises a secondary cooling circuit; The primary cooling circuit and the secondary cooling circuit are connected in a spiral manner at a connection point between the first cable and the pile body.

4. The charging pile according to claim 1, characterized in that: Also includes a display module; The display module is arranged on the surface of the pile body and is electrically connected to the control module.

5. The charging pile according to claim 1, characterized in that: Also includes warning lights; The warning light is electrically connected to the control module and is arranged outside the pile body.

6. The charging pile according to claim 1, characterized in that: The conductors include fiber optic data lines.

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