Electric vehicle charging equipment and alternating current charging detection device thereof

Abstract

The utility model provides a detection device for alternating current charging of an electric automobile. The detection device comprises an electromagnetic induction element and a microprocessor, wherein the electromagnetic induction element is arranged inside a vehicle charging socket and is used for detecting an alternating current signal when a vehicle is subjected to alternating current charging and transmitting the alternating current signal to the microprocessor; and the microprocessor receives an alternating current signal detected by the electromagnetic induction element, takes the alternating current signal as a basis for obtaining data of alternating current charging times and / or charging duration of the vehicle, and stores the data and corresponding vehicle information. Meanwhile, the utility model provides electric vehicle charging equipment adopting the detection device. According to the utility model, the induction coil is arranged inside the charging socket, alternating current charging is detected by acquiring the alternating current signal of the induction coil, the alternating current signal is transmitted to the microprocessor, and an electric vehicle renter manufacturer acquires the alternating current charging condition of each new energy vehicle based on the detection information. Therefore, the charging of the battery can be managed according to the charging condition of the alternating current.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle charging detection technology, specifically to an electric vehicle charging device and its AC charging detection apparatus. Background Technology

[0002] There are two charging methods for electric vehicles (EVs): alternating current (AC) and direct current (DC). The core difference between the two charging methods lies in the location of the current conversion. AC charging converts AC to DC inside the vehicle, while DC charging completes this conversion at the charging station.

[0003] The main advantages of AC charging are low cost and easy installation. It is generally suitable for off-peak electricity use at night. However, its disadvantage is slow charging speed, usually requiring 6-12 hours or even longer to fully charge, which limits its application in situations requiring fast charging.

[0004] DC charging transfers electrical energy directly to the vehicle's battery in the form of direct current, significantly reducing charging time. It can typically charge the battery to 30% or more in a shorter time (usually just 80 minutes). The advantage of this charging method is its rapid charging capability, making it particularly suitable for situations requiring quick energy replenishment, such as fast-charging stations for road trips. However, disadvantages include higher costs for charging infrastructure and higher grid load requirements.

[0005] The lifespan of an electric vehicle's battery is affected by charging frequency, charging speed, battery management system efficiency, and ambient temperature. If only AC charging is used, the battery lifespan may be between 8 and 15 years. However, frequent use of DC fast charging will shorten the lifespan of an electric vehicle's battery because the high temperatures generated during fast charging can damage the battery's chemical structure, thus potentially reducing the lifespan to 5 to 8 years.

[0006] Nowadays, with the rapid development of the new energy vehicle industry, the electric vehicle rental business is also increasing. After renting out electric vehicles, electric vehicle rental companies hope that users will use AC charging more often to protect the electric vehicle battery and vehicle lifespan. Therefore, there is an urgent need in this field for a technology that can detect the charging method and number of charging cycles of electric vehicles so that electric vehicle rental companies can understand the battery charging status of electric vehicles at any time.

[0007] Currently, no descriptions or reports of technologies similar to this utility model have been found, and similar information from both domestic and international sources has not yet been collected. Utility Model Content

[0008] This utility model addresses the aforementioned shortcomings in the existing technology by providing an electric vehicle charging device and its AC charging detection device.

[0009] According to one aspect of the present invention, a detection device for AC charging of an electric vehicle is provided, comprising: an electromagnetic induction element and a microprocessor, wherein the electromagnetic induction element is connected to the microprocessor; wherein:

[0010] The electromagnetic induction element is disposed inside the vehicle charging socket and is used to detect AC signals when the vehicle is AC charging and transmit them to the microprocessor.

[0011] The microprocessor receives the AC signal detected by the electromagnetic induction element as a basis for obtaining the number of times the vehicle is AC charged and / or the charging time data, and stores the obtained data along with the corresponding vehicle information.

[0012] in:

[0013] The electromagnetic induction element includes: a coil, an iron core, and an output module; wherein, the coil is made of wire and wound around the outside of the iron core, and is used to detect the AC charging signal of the vehicle; the iron core is used to enhance the magnetic field around the coil; the output module is connected to the coil and is used to convert the induced current or voltage generated in the coil into the detected AC signal and output it.

[0014] According to another aspect of the present invention, an electric vehicle charging device is provided, comprising: a charging pile, a cable assembly, a vehicle charging plug and a vehicle charging socket, and further comprising the electric vehicle AC charging detection device described above in the present invention installed inside the vehicle charging socket.

[0015] By adopting the above technical solution, this utility model has at least one of the following beneficial effects compared with the prior art:

[0016] Existing technologies lack a method for detecting vehicle charging methods on the vehicle itself. While vehicle manufacturers can obtain charging data, it is difficult for vehicle rental companies to access this data. This invention utilizes an electromagnetic induction element installed inside the vehicle's charging socket to enable electric vehicle rental companies to detect the charging methods used by passengers. This allows them to take measures to manage AC and DC charging methods, thereby managing vehicles more effectively and extending their service life.

[0017] The electric vehicle charging equipment and its AC charging detection device provided by this utility model use electromagnetic induction elements to sense AC signals in the charging circuit, which has the advantages of simplicity and high efficiency.

[0018] The electric vehicle charging equipment and its AC charging detection device provided by this utility model use a microprocessor to acquire and the AC signal sensed by the electromagnetic induction element. Based on the AC signal detected by the electromagnetic induction element, the number of times the vehicle is AC charged and / or the charging time data can be directly obtained. This data and the corresponding vehicle information are stored, which has the advantage of timely acquisition and centralized management of information.

[0019] The electric vehicle charging equipment and its AC charging detection device provided by this utility model can also upload AC signals to the upper server through the communication module, making it more convenient for electric vehicle rental companies to obtain the AC charging status of each electric vehicle. It has the positive effects of being simple, efficient and low-cost. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the detection device for AC charging of electric vehicles in a preferred embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the working structure of an electric vehicle charging device in a preferred embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram illustrating the working principle of an electric vehicle charging device in a preferred embodiment of the present invention.

[0024] In the diagram, 1 is the vehicle charging plug, 2 is the vehicle charging socket, 3 is the cable assembly, 4 is the coupler, and 5 is the electromagnetic induction element. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below: These embodiments are implemented based on the technical solution of this utility model, and provide detailed implementation methods and specific operation processes. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

[0026] AC charging of electric vehicles involves transmitting AC power from the mains to the vehicle's charging system via a charging station. During charging, the current flows through the charging lines and onboard charger, generating an alternating magnetic field, which in turn forms an AC wave. According to the principle of electromagnetic induction, when an alternating current flows through a conductor, an alternating magnetic field is generated around it. This changing magnetic field, in turn, generates a changing electric field. The alternation of the electric and magnetic fields forms an electromagnetic wave.

[0027] To address the lack of existing technology capable of detecting the charging method and number of charges for electric vehicles (EVs), enabling EV rental companies to monitor the battery charging status in real time, this invention provides an AC charging detection device for EVs. This device incorporates an induction coil inside the charging socket. The AC signal from the induction coil is used to detect AC charging. This signal is transmitted to a microprocessor, allowing EV rental companies to obtain the AC charging status of each new energy vehicle and manage battery charging accordingly. Furthermore, considering factors such as heat dissipation, manufacturing processes, and adaptation to environmental thermal expansion and contraction during EV charging, sufficient clearance is maintained between the EV plug and the charging pile plug. This invention fully utilizes this clearance, detachably integrating the detection component inside the EV's AC charging plug without altering the internal structure of the charging plug and socket, thus enabling AC charging detection for EVs.

[0028] The electric vehicle AC charging detection device provided in this embodiment may include: an electromagnetic induction element and a microprocessor, wherein the electromagnetic induction element is connected to the microprocessor; wherein:

[0029] An electromagnetic induction element is installed inside the vehicle charging socket to detect AC signals when the vehicle is AC charging and transmit them to a microprocessor. The microprocessor receives the AC signals detected by the electromagnetic induction element as a basis for obtaining data on the number of times the vehicle is AC charged and / or the charging duration, and stores the obtained data along with the corresponding vehicle information.

[0030] In some preferred embodiments, the electromagnetic induction element can be fixed inside the vehicle charging socket by means of a patch.

[0031] In some preferred embodiments, the electromagnetic induction element may further include: a coil, an iron core, and an output module; wherein the coil is made of wire and wound around the outside of the iron core for detecting the AC charging signal of the vehicle, the iron core is used to enhance the magnetic field around the coil, and the output module is connected to the coil for converting the induced current or voltage generated in the coil into the detected AC signal and outputting it.

[0032] The aforementioned electromagnetic induction element further includes:

[0033] The electromagnetic induction element is detachably installed inside the vehicle's charging socket via a labeling process.

[0034] In operation, when an AC signal passes through the charging circuit, a magnetic field with the same frequency as the AC signal is generated in the circuit. The coil is located in the changing magnetic field and cuts the changing magnetic field lines. According to Faraday's law of electromagnetic induction, when the coil cuts the magnetic field lines, an electromotive force (EMF) is generated in the coil. According to Lenz's law, since the wires in the coil are closed (or connected to a closed circuit), the generated EMF drives a current to flow in the coil, resulting in an induced current that opposes the change in the original magnetic field. This induced current is converted into a detectable signal, i.e., an AC signal, through an output module (e.g., an amplifier), which can be used for subsequent signal analysis.

[0035] Specifically, such as Figure 1 As shown, in some preferred embodiments, the detection device may further include a communication module, which is used to upload the AC signal detected by the electromagnetic induction element stored in the microprocessor and the vehicle information to the upper server.

[0036] In some preferred embodiments, the microprocessor described above may further employ an MF RC522 chip processor, an AM3358BZCZ100 chip processor, or an Infineon AURIX chip processor. TM Either the TC26xD chip processor or the MM32F5230 chip processor.

[0037] In some preferred embodiments, the communication module may further employ a WIFI element or a Bluetooth element.

[0038] The electric vehicle AC charging detection device provided in the above embodiments of this utility model uses an electromagnetic induction element to detect AC charging in the charging circuit and stores it in a microprocessor or uploads it to an upper-end server (e.g., a cloud server) via a communication module. Electric vehicle rental companies can obtain the AC charging status of each electric vehicle from the microprocessor or the upper-end server, and then manage battery charging based on the AC charging status, such as formulating fee reduction strategies based on the accumulation of AC charging times, to encourage users to use AC charging for electric vehicles.

[0039] Based on the detection device for AC charging of electric vehicles provided in any of the above embodiments of the present invention, an embodiment of the present invention also provides an electric vehicle charging device.

[0040] Specifically, such as Figure 2As shown, the electric vehicle charging equipment provided in this embodiment may include: a charging pile, a cable assembly 3, a vehicle charging plug 1, a vehicle charging socket 2, and a detection device for AC charging of an electric vehicle according to any of the above embodiments of this utility model, installed inside the vehicle charging socket 2. A coupler 4 is formed between the vehicle charging plug 1 and the vehicle charging socket 2.

[0041] In some preferred embodiments, the detection device for AC charging of the electric vehicle is detachably installed inside the vehicle charging socket.

[0042] like Figure 3 The diagram shows the structure of the electromagnetic induction element 5 of the detection device for AC charging of electric vehicles in the above embodiment of the present invention, which is installed inside the vehicle charging socket 2; wherein, the electromagnetic induction element 5 is detachably installed in the internal gap of the vehicle charging socket 2.

[0043] The working process of this electric vehicle charging equipment is as follows:

[0044] When the vehicle charging plug is inserted into the vehicle charging socket, and the resistance value (R4+RC) between the detection point and PE meets a specific value, it is determined that the vehicle charging plug is fully inserted into the vehicle charging socket. At this time, the electronic lock is locked and charging begins. When AC charging is performed, the electromagnetic induction element 5 on the vehicle charging socket 2 detects the AC signal and then transmits the AC signal to the microprocessor.

[0045] The above embodiments of this utility model utilize an electromagnetic induction element installed inside the vehicle charging socket. This allows electric vehicle rental companies to detect the charging methods used by renters and take measures to manage AC and DC charging, thereby improving vehicle management and extending the vehicle's effective lifespan. Using an electromagnetic induction element to sense AC signals in the charging circuit offers advantages of simplicity and efficiency. A microprocessor can acquire the AC signals sensed by the electromagnetic induction element, directly obtaining data on the number of AC charging sessions and / or charging duration. This data, along with corresponding vehicle information, can be stored, enabling timely information acquisition and centralized management. Furthermore, the AC signals can be uploaded to an upper-level server via a communication module, making it easier for electric vehicle rental companies to obtain information on the AC charging status of each electric vehicle. This approach offers advantages of simplicity, efficiency, and low cost.

[0046] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] Any matters not covered in the above embodiments of this utility model are known in the art.

[0048] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the substantive content of this utility model.

Claims

1. An electric vehicle alternating current charging detection device, characterized in that, Comprising: An electromagnetic induction element and a microprocessor, the electromagnetic induction element being connected with the microprocessor; wherein: The electromagnetic induction element is arranged inside the vehicle charging socket for detecting the alternating current signal when the vehicle is being charged by alternating current and transmitting to the microprocessor; The microprocessor receives the alternating current signal detected by the electromagnetic induction element as the basis for obtaining the number of times and / or the length of time of the vehicle alternating current charging data, and stores the obtained data with the corresponding vehicle information; Wherein: The electromagnetic induction element comprises a coil, a core and an output module; wherein the coil is wound by a wire and wound outside the core for detecting the alternating current charging signal of the vehicle, the core is used for enhancing the magnetic field around the coil, and the output module is connected with the coil for converting the induced current or voltage generated in the coil into the detected alternating current signal and outputting.

2. The detection device for AC charging of an electric vehicle according to claim 1, characterized in that, In the working state, when the alternating current signal passes through the charging circuit, a magnetic field with the same frequency as the alternating current signal will be generated in the charging circuit; the coil is located in the changing magnetic field and cuts the changing magnetic induction lines, an electromotive force is generated in the coil, and then a current is driven to flow in the coil, obtaining an induced current opposite to the changing direction of the original magnetic field, the induced current is converted into a detectable alternating current signal through the output module.

3. The detection device for AC charging of an electric vehicle according to claim 1, characterized in that, The electromagnetic induction element is detachably arranged inside the vehicle charging socket by the way of a patch.

4. The detection device for AC charging of an electric vehicle according to claim 1, characterized by The microprocessor is any one of an MF RC522 chip processor, an AM3358BZCZ100 chip processor, an Infineon AURIX TM TC26xD chip processor and an MM32F5230 chip processor.

5. The detection device for electric vehicle alternating current charging according to any one of claims 1-4, characterized in that, Further comprising: A communication module for uploading the alternating current signal detected by the electromagnetic induction element and the vehicle information stored by the microprocessor to the upper server.

6. The detection device for AC charging of an electric vehicle according to claim 5, wherein The communication module adopts WIFI element or Bluetooth element.

7. An electric vehicle charging apparatus comprising: The charging pile, the cable assembly, the vehicle charging plug and the vehicle charging socket, characterized in that, further comprising the detection device of the alternating current charging of the electric vehicle according to any one of claims 1-6 installed inside the vehicle charging socket.

8. The electric vehicle charging apparatus of claim 7, wherein, When the electric vehicle is being charged by alternating current, the electromagnetic induction element on the vehicle charging socket detects the alternating current signal and then transmits the alternating current signal to the microprocessor.

9. The electric vehicle charging apparatus of claim 7, wherein, The detection device of the alternating current charging of the electric vehicle is detachably installed inside the vehicle charging socket.

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