Electric vehicle overcharge protection system

Abstract

The present invention discloses an electric vehicle overcharge protection system, comprising an outer shell, a detection device for detecting battery temperature and charging current during charging, a pop-up device for controlling the separation of the plug of the electric vehicle charger from the outer shell, and a main control device electrically connected to the detection device and the pop-up device, wherein the main control device, the detection device and the pop-up device are arranged on the outer shell, and the outer shell is provided with a slot for inserting a first pin of the plug and a second pin for inserting into the slot of a socket. The electric vehicle overcharge protection system of the present invention timely pops up the charger plug when charging is completed, protects the personal safety of the user, thereby greatly reducing the occurrence of electrical fires and improving charging safety.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric vehicles, and in particular, relates to an overcharging protection system for electric vehicles. Background Art

[0002] Sockets are very common, but there are few sockets specifically used to charge electric vehicles. Whether at home or in a public electric vehicle charging place, electric vehicles are generally charged with wall sockets, which do not provide good protection and pose a great safety hazard.

[0003] In recent years, fires and even explosions during charging of electric vehicles are common, which may even affect the personal safety of users and others in serious cases. In addition, if the plug is not unplugged when fully charged in public places, it will occupy socket resources. There are three reasons for the fire and even explosion: First, the vehicle lines are aging. Due to long-term use, the lines of electric vehicles are aging, and short circuits occur between lines. Second, the battery of the electric vehicle is damaged, resulting in leakage, which in turn leads to short circuit fire. Third, the heat dissipation of the electric vehicle is poor during charging, resulting in a short circuit in the electric vehicle. It is generally difficult for users to distinguish the above three reasons. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an electric vehicle overcharging protection system, the purpose of which is to improve charging safety.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an electric vehicle overcharging protection system, including an outer shell, a detection device for detecting battery temperature and charging current during charging, a pop-up device for controlling the separation of the plug of the electric vehicle charger from the outer shell, and a main control device electrically connected to the detection device and the pop-up device, the main control device, the detection device and the pop-up device are arranged on the outer shell, and the outer shell is provided with a slot for inserting a first pin of the plug and a second pin for inserting into the slot of the socket.

[0006] The ejection device comprises an electromagnet, and the electromagnet is arranged on the outer shell.

[0007] The detection device comprises a current sensor and a temperature measuring probe, and the current sensor and the temperature measuring probe are electrically connected to the main control system.

[0008] The electric vehicle overcharging protection system also includes an alarm device arranged on the outer shell.

[0009] The alarm device comprises a buzzer, and the buzzer is electrically connected to the main control device.

[0010] The electric vehicle overcharging protection system also includes a communication device and a power supply device arranged on the outer shell.

[0011] The communication device includes a WiFi module and a Bluetooth module, the power supply device includes a voltage step-down device and a voltage stabilizing module, the voltage input ends of the WiFi module and the Bluetooth module are connected to the output end of the voltage stabilizing module, and the signal ports of the WiFi module and the Bluetooth module are connected to the ports of the main control device.

[0012] Two slots are arranged on the outer shell, and the ejection device is located between the two slots.

[0013] The electric vehicle overcharging protection system of the present invention can timely eject the charger plug when charging is completed, thereby protecting the personal safety of the user, thereby greatly reducing the occurrence of electrical fires and improving charging safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] This specification includes the following drawings, which show the following contents:

[0015] Figure 1 is a cross-sectional view of an electric vehicle overcharging protection system of the present invention;

[0016] Figure 2 is a side view of the electric vehicle overcharging protection system of the present invention;

[0017] Figure 3 is a front view of the electric vehicle overcharging protection system of the present invention;

[0018] The components marked in the figure are: 1. outer shell; 2. second pin; 3. electromagnet; 4. power supply device; 5. main control device; 6. buzzer; 7. WiFi module; 8. slot. DETAILED DESCRIPTION

[0019] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and facilitating its implementation.

[0020] like Figures 1 to 3 As shown, the present invention provides an electric vehicle overcharging protection system, comprising an outer shell 1, a detection device for detecting battery temperature and charging current during charging, a pop-up device for controlling the plug of the electric vehicle charger to be separated from the outer shell 1, and a main control device 5 electrically connected to the detection device and the pop-up device. The main control device 5, the detection device and the pop-up device are arranged on the outer shell 1, and the outer shell 1 is provided with a slot for inserting a first pin of the plug and a second pin 2 for inserting into the slot of the socket.

[0021] Specifically, if Figures 1 to 3As shown, the ejection device includes an electromagnet 3, which is arranged on the outer shell 1. Two slots 8 and two second pins 2 are arranged on the outer shell 1, and the plug of the electric vehicle charger has two first pins, and the ejection device is located between the two slots 8. When in use, the second pin 2 on the outer shell 1 is inserted into the slot of the socket, and the first pin of the plug of the electric vehicle charger is inserted into the slot 8 of the outer shell 1, and the socket and the plug are energized, and then the battery of the electric vehicle can be charged. When charging is completed, the electromagnet 3 applies a thrust to the plug, so that the first pin of the plug is pulled out of the slot 8 of the outer shell 1, and the power is cut off.

[0022] The detection device includes a current sensor and a temperature probe, which are electrically connected to the main control system. The main control device 5 includes a main control chip, which is used to receive signals and determine whether the battery is full and whether the battery temperature is normal. The model of the main control chip is stm32f103c8t6. The temperature probe is used to monitor the temperature of the battery of the electric vehicle in real time during the charging process and feed back relevant data to the main control chip. The temperature probe is set in the battery compartment of the electric vehicle, and the temperature probe is electrically connected to the main control device 5 through a data line. The current sensor is a Hall sensor, and the current sensor and the temperature probe are connected to the signal port of the main control chip. The current sensor is located inside the outer shell 1.

[0023] like Figure 1 As shown, the electric vehicle overcharge protection system of the present invention further includes an alarm device arranged on the outer shell 1, the alarm device includes a buzzer 6, the buzzer 6 is electrically connected to the main control device 5, and the buzzer 6 is used to sound an alarm when the battery temperature is abnormal.

[0024] like Figure 1 As shown, the electric vehicle overcharge protection system of the present invention also includes a communication device and a power supply device 4 arranged on the outer shell 1. The communication device can be connected to the user's mobile phone device for the user to view the charging status in real time. The communication device includes a WiFi module 7 and a Bluetooth module. The power supply device 4 includes a buck and a voltage regulator module. The voltage input ends of the WiFi module 7 and the Bluetooth module are connected to the output end of the voltage regulator module, and the signal ports of the WiFi module 7 and the Bluetooth module are connected to the ports of the main control device 5. The WiFi module 7 and the buzzer 6 are integrated on the main control chip, and the buck and the voltage regulator module are both located inside the outer shell 1. The voltage input end of the buzzer 6 is connected to the output end of the voltage regulator module, and the signal port is connected to the port of the main control chip.

[0025] During the charging process, the main control chip receives data, compares the actual current with the set threshold, calculates the battery charging completion degree, and compares the actual temperature with the set threshold. When the temperature is abnormal, it sends instructions to the electromagnet 3 and the buzzer 6; after receiving the instruction, the buzzer 6 sounds an alarm, and the main control chip controls the WiFi module 7 to send a warning message to the management department.

[0026] The electric vehicle overcharging protection system of the above structure has the following advantages:

[0027] (1) The Hall current sensor is used to detect the charging current of the electric vehicle in real time. When charging is completed, the charger plug is ejected in time to protect the user's personal safety, making up for the shortcomings of existing sockets, thereby greatly reducing the occurrence of electrical fires;

[0028] (2) The electromagnet 3 is controlled by the main control chip, and no manual operation is required. The circuit connection is actively cut off to play a protective role. Compared with the existing technology, it is more labor-saving and safer;

[0029] (3) Through the WiFi module 7 and the Bluetooth module, when the temperature is abnormal, a warning message is sent to the management department in time to prevent accidents and improve rescue efficiency.

[0030] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. Electric vehicle overcharging protection system, characterized in that: It includes an outer shell, a detection device for detecting battery temperature and charging current during charging, a pop-up device for controlling the plug of the electric vehicle charger to be separated from the outer shell, and a main control device electrically connected to the detection device and the pop-up device. The main control device, the detection device and the pop-up device are arranged on the outer shell. The outer shell is provided with a slot for inserting a first pin of the plug and a second pin for inserting into the slot of the socket. The pop-up device includes an electromagnet, which is arranged on the outer shell; two slots and two second pins are arranged on the outer shell, the plug of the electric vehicle charger has two first pins, and the pop-up device is located between the two slots; When in use, the second pin on the outer shell is inserted into the slot of the socket, and the first pin of the plug of the electric vehicle charger is inserted into the slot of the outer shell, and the socket and the plug are energized, and then the battery of the electric vehicle can be charged; when charging is completed, the electromagnet applies a thrust to the plug, so that the first pin of the plug is pulled out of the slot of the outer shell, and the power is cut off; The detection device includes a current sensor and a temperature probe, which are electrically connected to the main control system. The main control device includes a main control chip, which is used to receive signals and determine whether the battery is full and whether the battery temperature is normal; The temperature probe is used to monitor the temperature of the battery of the electric vehicle in real time during the charging process, and feed back the relevant data to the main control chip; the temperature probe is arranged in the battery compartment of the electric vehicle, and the temperature probe is electrically connected to the main control device through a data line; the current sensor is a Hall sensor, and the current sensor and the temperature probe are connected to the signal port of the main control chip, and the current sensor is located inside the outer shell; The electric vehicle overcharge protection system further comprises an alarm device arranged on the outer shell, the alarm device comprises a buzzer, the buzzer is electrically connected to the main control device, and the buzzer is used to sound an alarm when the battery temperature is abnormal; During the charging process, the main control chip receives data, compares the actual current with the set threshold, calculates the battery charging completion degree, and compares the actual temperature with the set threshold. When the temperature is abnormal, it sends instructions to the electromagnet and buzzer; after receiving the instruction, the buzzer sounds an alarm, and the main control chip controls the WiFi module to send a warning message to the management department.

2. The electric vehicle overcharging protection system according to claim 1, characterized in that: The ejection device comprises an electromagnet, and the electromagnet is arranged on the outer shell.

3. The electric vehicle overcharging protection system according to claim 1, characterized in that: The detection device comprises a current sensor and a temperature measuring probe, and the current sensor and the temperature measuring probe are electrically connected to the main control system.

4. The electric vehicle overcharging protection system according to any one of claims 1 to 3, characterized in that: It also includes an alarm device arranged on the outer shell.

5. The electric vehicle overcharging protection system according to claim 4, characterized in that: The alarm device comprises a buzzer, and the buzzer is electrically connected to the main control device.

6. The electric vehicle overcharging protection system according to any one of claims 1 to 5, characterized in that: It also includes a communication device and a power supply device which are arranged on the outer shell.

7. The electric vehicle overcharge protection system according to claim 6, characterized in that: The communication device includes a WiFi module and a Bluetooth module, the power supply device includes a voltage step-down device and a voltage stabilizing module, the voltage input ends of the WiFi module and the Bluetooth module are connected to the output end of the voltage stabilizing module, and the signal ports of the WiFi module and the Bluetooth module are connected to the ports of the main control device.

8. The electric vehicle overcharging protection system according to any one of claims 1 to 6, characterized in that: Two slots are arranged on the outer shell, and the ejection device is located between the two slots.

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