CN207705845U - The electric vehicle charge protection system of adjustable voltage range - Google Patents

Abstract

The utility model discloses an electric vehicle charging protection system with an adjustable voltage range, specifically relates to the field of charging equipment, including: an intelligent main control center; The main control center; the input module, for technicians to input the safe temperature value of the charging environment and the optimum charging temperature value; the temperature comparison module, which receives the temperature information sent by the intelligent main control center, and compares the temperature information obtained by the temperature sensing module with the described temperature information respectively. The safe temperature value of the charging environment and the optimum charging temperature value; the switching power supply module is controlled by the intelligent main control center, and is used to control the opening or closing of the electric vehicle power supply circuit; the voltage conversion module is controlled by the intelligent main control center Center for adjustable voltage. The utility model has the ability to select the most suitable charging voltage according to the charging environment temperature, thereby prolonging the life of the battery of the electric vehicle, and avoiding spontaneous combustion or explosion accidents caused by heating of the electric vehicle when charging in a high-temperature environment.

Description

Electric vehicle charging protection system with adjustable voltage range

technical field

The utility model relates to the field of charging equipment, in particular to an electric vehicle charging protection system with an adjustable voltage range and a charging protection method thereof.

Background technique

Charging piles are generally installed in public buildings or parking lots in residential areas, and can charge various types of electric vehicles according to different voltage levels. Among them, the input end of the charging pile is directly connected to the AC power grid, and the output end is equipped with a charging gun for the convenience of users.

When the ambient temperature rises, the capacity of the battery can be increased. When the temperature rises by 1°C, the capacity will increase by 0.8%. However, the data results show that when the ambient temperature is 25°C, the life of the battery will be reduced by half for every 6-10°C increase in temperature. Moreover, high-voltage charging when the charging environment temperature is high can easily cause the battery to heat up, which can reduce the service life of the battery and cause a fire accident.

Utility model content

The utility model provides an electric vehicle charging protection system with an adjustable voltage range and a charging protection method thereof. The utility model has the advantages that the electric vehicle charging protection system can select the most suitable charging voltage according to the charging environment temperature, thereby prolonging the life of the battery of the electric vehicle, and avoiding spontaneous combustion or explosion caused by heating of the electric vehicle when charging in a high-temperature environment ACCIDENT.

In order to achieve the above object, the utility model provides the following technical solutions:

Electric vehicle charging protection system with adjustable voltage range, including: intelligent main control center; temperature sensing module, used to obtain the temperature information of the charging environment, and transmit the temperature information to the intelligent main control center; input module, for technicians to input The safe temperature value of the charging environment and the optimum temperature value for charging; the temperature comparison module receives the temperature information sent by the intelligent main control center, and compares the temperature information obtained by the temperature sensing module with the safe temperature value of the charging environment and the maximum charging temperature. Appropriate temperature value; the switching power supply module, controlled by the intelligent main control center, is used to control the opening or closing of the electric vehicle power supply circuit; the voltage conversion module, controlled by the intelligent main control center, is used to provide adjustable voltage.

Among them, the intelligent main control center can select the most suitable charging voltage at this temperature according to the temperature information of the charging environment obtained by the temperature sensing module, thereby greatly extending the service life of the electric vehicle battery. Moreover, when the temperature of the charging environment is higher than the safe temperature value of the charging environment, the intelligent main control center can control the switching power supply module to immediately disconnect the charging circuit and stop supplying power to the electric vehicle, thereby preventing the battery from continuously charging under high temperature and high voltage. Thermal runaway, causing battery failure.

Preferably, the electric vehicle charging protection system further includes a local storage module for storing the corresponding relationship between the charging environment temperature and the adjustable voltage; correspondingly, the voltage conversion module includes a plurality of voltage adjustable modules, each of the The adjustable voltage modules provide corresponding adjustable voltages respectively.

Preferably, the electric vehicle charging protection system further includes a charging timing module for calculating charging times corresponding to multiple adjustable voltages.

Preferably, the electric vehicle charging protection system further includes a selection input module for the user to select one of a plurality of adjustable voltages to charge the electric vehicle.

Preferably, the electric vehicle charging protection system further includes a communication module for the user to send a selection instruction to the intelligent main control center when selecting an adjustable voltage for charging.

Preferably, the temperature sensing module includes a temperature sensor.

Preferably, the electric vehicle charging protection system further includes a display module.

The beneficial effects of the utility model are:

In the utility model, the intelligent main control center can select the most suitable charging voltage at the temperature according to the temperature information of the charging environment obtained by the temperature sensing module, thereby greatly prolonging the service life of the battery of the electric vehicle. Moreover, when the temperature of the charging environment is higher than the safe temperature value of the charging environment, the intelligent main control center can control the switching power supply module to immediately disconnect the charging circuit and stop supplying power to the electric vehicle, thereby preventing the battery from continuously charging under high temperature and high voltage. Thermal runaway, causing battery failure.

Description of drawings

FIG. 1 is a schematic structural diagram of an electric vehicle charging protection system with an adjustable voltage range in Embodiment 1.

In the figure: 1. Intelligent main control center, 11. Voltage conversion module, 12. Temperature sensing module, 120. Temperature sensor, 13. Temperature comparison module, 14. Local storage module, 15. Input module, 16. Communication module, 17 . Charging timing module, 18. Switching power supply module.

Detailed ways

Example 1

This embodiment provides a technical solution:

As shown in Figure 1, the electric vehicle charging protection system with an adjustable voltage range includes: an intelligent main control center 1; a temperature sensing module 12, which is used to obtain temperature information of the charging environment, and electrically transmit the temperature information to the intelligent main control center 1; the input module 15 is used for technicians to input the safe temperature value of the charging environment and the optimum temperature value for charging; the temperature comparison module 13 receives the temperature information sent by the intelligent main control center 1, and compares the temperature information obtained by the temperature sensing module 12 with the The safe temperature value of the charging environment and the optimum temperature value for charging; the switching power supply module 18 is controlled by the intelligent main control center 1, and is used to control the opening or closing of the electric vehicle power supply circuit; the voltage conversion module 11 is controlled by the intelligent main control center 1. The control center 1 is used to provide adjustable voltage; the local storage module 14 is used to store the corresponding relationship between the charging environment temperature and the adjustable voltage; correspondingly, the voltage conversion module 11 includes a plurality of voltage adjustable modules, each of which has an adjustable voltage The modules respectively provide corresponding adjustable voltages; the charging timing module 17 for calculating the charging time corresponding to multiple adjustable voltages; the selection input module for the user to select one of the multiple adjustable voltages to charge the electric vehicle ; A communication module 16 for the user to send a selection instruction to the intelligent main control center 1 when selecting an adjustable voltage for charging; a display module. Wherein, the temperature sensing module 12 includes a temperature sensor 120 .

In the utility model, the intelligent main control center 1 can select the most suitable charging voltage at the temperature according to the temperature information of the charging environment obtained by the temperature sensing module 12, thereby greatly prolonging the service life of the battery of the electric vehicle. Moreover, when the temperature of the charging environment is higher than the safe temperature value of the charging environment, the intelligent main control center 1 can control the switching power supply module 18 to immediately disconnect the charging circuit and stop supplying power to the electric vehicle, thereby preventing the battery from being continuously charged under high temperature and high voltage. Thermal runaway occurs, causing the battery to fail.

The following are specific examples:

First, the technician inputs the safe temperature value of the charging environment into the intelligent main control center 1 through the input module, and then the temperature sensing module 12 installed on the electric vehicle charging device detects that the charging environment temperature is 23°C, and the temperature comparison module 13 will Comparing the charging environment temperature with the preset charging environment safety temperature range, it is detected that the charging environment temperature is 23°C and is within the range of the charging environment safety temperature value -25 to 55°C, so refer to Table 1, because this The electric vehicle battery provided by the example is the optimum charging temperature value at 25°C, and the charging ambient temperature is 23°C, so the charging ambient temperature is lower than the optimum charging temperature value. Therefore, according to the relationship table provided in Table 1, it can be known that for The charging voltage value selected by the user is 225, 228, 235, 240, and the corresponding charging completion time is provided to the customer at the same time. If the user chooses, it will be charged according to the voltage selected by the user. If the user does not choose, the charging voltage will be 220V to charge.

Table 1 Correspondence between charging ambient temperature and adjustable voltage

Claims (7)

1. An electric vehicle charging protection system with an adjustable voltage range, characterized in that it includes: Intelligent main control center (1); A temperature sensing module (12), configured to obtain temperature information of the charging environment, and electrically transmit the temperature information to the intelligent main control center (1); The input module (15) is used for technicians to input the safe temperature value of the charging environment and the optimum temperature value for charging; The temperature comparison module (13) receives the temperature information sent by the intelligent main control center (1), and compares the temperature information acquired by the temperature sensing module (12) with the safe temperature value of the charging environment and the optimum temperature value for charging ; The switching power supply module (18), controlled by the intelligent main control center (1), is used to control the opening or closing of the electric vehicle power supply circuit; The voltage conversion module (11), controlled by the intelligent main control center (1), is used to provide adjustable voltage. 2. The electric vehicle charging protection system with adjustable voltage range according to claim 1, further comprising a local storage module (14) for storing the corresponding relationship between the charging environment temperature and the adjustable voltage; Correspondingly, the voltage conversion module (11) includes a plurality of voltage adjustable modules, and each voltage adjustable module correspondingly provides a corresponding adjustable voltage. 3. The electric vehicle charging protection system with an adjustable voltage range according to claim 2, further comprising a charging timing module (17) for calculating the charging time corresponding to a plurality of adjustable voltages. 4. The electric vehicle charging protection system with adjustable voltage range according to claim 1, further comprising a selection input module for the user to select one of the multiple adjustable voltages to charge the electric vehicle. 5. The electric vehicle charging protection system with adjustable voltage range according to claim 4, characterized in that, it also includes communication for the user to send a selection command to the intelligent main control center (1) when selecting an adjustable voltage for charging. module (16). 6. The electric vehicle charging protection system with adjustable voltage range according to claim 1, characterized in that, the temperature sensing module (12) includes a temperature sensor (120). 7. The electric vehicle charging protection system with adjustable voltage range according to claim 1, further comprising a display module.