CN222473943U - Charging gun return detection device and charging pile - Google Patents
Charging gun return detection device and charging pile Download PDFInfo
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- CN222473943U CN222473943U CN202420876113.7U CN202420876113U CN222473943U CN 222473943 U CN222473943 U CN 222473943U CN 202420876113 U CN202420876113 U CN 202420876113U CN 222473943 U CN222473943 U CN 222473943U
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Abstract
本实用新型公开了一种充电枪归位检测装置及充电桩，本实用新型通过设置继电器模块、感应电路以及处理模块，感应电路与继电器模块连接，处理模块与继电器模块连接，通过设置感应电路感应充电枪本身的金属端子，不需要改变充电枪的结构或者在充电枪上额外安装用于检测的部件，设计更加简便，降低了成本；感应电路感应到充电枪的金属端子会改变继电器模块的工作状态，处理模块根据改变的工作状态就可以实现归位检测，确定充电枪是否归位，简单方便。
The utility model discloses a charging gun return detection device and a charging pile. The utility model sets a relay module, an induction circuit and a processing module. The induction circuit is connected to the relay module, and the processing module is connected to the relay module. By setting the induction circuit to sense the metal terminal of the charging gun itself, there is no need to change the structure of the charging gun or install additional components for detection on the charging gun, so the design is simpler and the cost is reduced. The induction circuit senses that the metal terminal of the charging gun will change the working state of the relay module, and the processing module can realize return detection according to the changed working state to determine whether the charging gun is returned, which is simple and convenient.
Description
Technical Field
The utility model relates to the field of charging, in particular to a homing detection device of a charging gun and a charging pile.
Background
At present, new energy electric vehicle technology is continuously developed, market occupancy of the new energy electric vehicle is continuously improved, and matched installation of charging piles in charging stations, markets and public parking lots is gradually increased. When charging is completed, homing detection is required for the charging gun to determine whether the charging gun is replaced into the charging pile after charging is completed. Nowadays, the homing detection function of the charging gun is generally realized by means of a mechanical switch, a magnetic induction switch, radio frequency identification and the like. However, when using a mechanical switch, a switch needs to be installed on a charging gun seat by punching, detection is realized by utilizing homing contact of the charging gun, the conditions of inaccurate detection caused by contact abrasion, insufficient installation and the like are easy to occur, when using a magnetic induction switch, a magnet needs to be installed on the charging gun, a magnetic induction switch device is installed on the charging gun seat, the installation is complex, the magnet is used on high-power equipment such as the charging gun, the defect of short service life exists, the customized charging gun is required, the cost is high, when using radio frequency identification, an identification code needs to be attached to each gun, an identifier is installed on a socket, the installation is complicated, the waterproof, sun-proof, dust-proof and damage-proof requirements are met, and meanwhile, a sensor is installed on the gun and is easy to be damaged by a user by accident.
Disclosure of utility model
The embodiment of the application provides a homing detection device of a charging gun and a charging pile, which are used for solving at least one problem existing in the related art, and the technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a homing detection apparatus for a charging gun, including:
a relay module;
The induction circuit is connected with the relay module and is used for inducing a metal terminal of the charging gun to change the working state of the relay module;
And the processing module is connected with the relay module and is used for homing detection according to the working state.
In one embodiment, the processing module includes a power supply unit and a processing unit, the power supply unit being connected to the processing unit, the relay module and the sensing circuit.
In one embodiment, the induction circuit comprises an oscillator and a switch unit, wherein the oscillator is connected with the switch unit, and the switch unit is connected with the relay module and the power supply unit.
In one embodiment, the oscillator includes a first inductor and a first capacitor connected in parallel, the first inductor and the first capacitor being connected to the switching unit.
In one embodiment, the switch unit comprises a first triode, a second triode, a first resistor, a second resistor, a third resistor, a second inductor and a second capacitor, wherein one end of the first resistor is connected with one end of the second capacitor, the collector of the first triode and the power supply unit, the other end of the first resistor is connected with the base of the first triode and one end of the first inductor, the other end of the first inductor is connected with one end of the second inductor and one end of the second resistor, the other end of the second resistor is connected with the emitter of the first triode, the other end of the second inductor is connected with the other end of the second capacitor and one end of the third resistor, the other end of the third resistor is connected with the base of the second triode, the emitter of the second triode is grounded, and the collector of the second triode is connected with the relay module.
In one embodiment, the switch unit further comprises a first diode, a second diode, a fourth resistor and a fifth resistor, one end of the fourth resistor is connected with the power supply unit, the other end of the fourth resistor is connected with one end of the first resistor and the negative electrode of the second diode, the positive electrode of the second diode is grounded, one end of the fifth resistor is connected with the base electrode of the second triode, the other end of the fifth resistor is grounded, the positive electrode of the first diode is connected with the base electrode of the first triode, and the negative electrode of the first diode is connected with one end of the first inductor.
In one embodiment, the induction circuit is disposed inside a casing of the charging stake.
In one embodiment, the induction circuit is disposed on the back of a charging gun receptacle for inserting a charging gun.
In one embodiment, the processing module further comprises a communication unit connected to the power supply unit and the processing unit.
In a second aspect, an embodiment of the present application provides a charging pile, including the charging gun homing detection device.
The beneficial effects in the technical scheme at least comprise:
The induction circuit is connected with the relay module, the processing module is connected with the relay module, the induction circuit is arranged to induce the metal terminal of the charging gun body, the structure of the charging gun is not required to be changed, or a part for detection is additionally arranged on the charging gun, the design is simpler and more convenient, the cost is reduced, the induction circuit is used for inducing the metal terminal of the charging gun to change the working state of the relay module, the processing module can realize homing detection according to the changed working state, and whether the charging gun is in a home position is determined, so that the charging gun is simple and convenient.
The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will become apparent by reference to the drawings and the following detailed description.
Drawings
In the drawings, the same reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily drawn to scale. It is appreciated that these drawings depict only some embodiments according to the disclosure and are not therefore to be considered limiting of its scope.
FIG. 1 is a schematic diagram of a circuit of a homing detection device for a charging gun according to an embodiment of the application;
fig. 2 is a schematic view of a charging pile according to an embodiment of the present application;
Fig. 3 (a) is a schematic view of an ac charging gun head terminal, and fig. 3 (b) is a schematic view of a dc charging gun head terminal.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
The terms "first," "second," "third," and the like in the description and in the claims and drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the related art, when the charging gun is connected with the electric automobile, the communication line between the devices carries out handshake operation, the electric automobile outputs the real-time state of the BMS of the electric automobile through the communication line, the charging pile detects the connection state of the charging gun and the electric automobile through the communication line so as to provide accurate and efficient charging service, after the charging is finished and the charging gun is pulled away from the electric automobile by a user, the communication line is disconnected, the states of the charging gun and the electric automobile are not interacted, and at the moment, the charging pile only knows that the charging gun is separated from the electric automobile and does not know whether the charging gun is reset or not.
The utility model is further explained and illustrated below with reference to the drawing and the specific embodiments of the present specification.
Referring to fig. 1, an embodiment of the application provides a homing detection device for a charging gun, which comprises a relay module 1, an induction circuit 2 and a processing module. The induction circuit 2 is connected with the relay module 1 and is used for inducing a metal terminal of the charging gun to change the working state of the relay module 1, and the processing module is connected with the relay module 1 and is used for homing detection according to the working state.
In one embodiment, the processing module comprises a power supply unit, a processing unit and a communication unit, wherein the processing unit is connected with the communication unit, and the power supply unit is connected with the processing unit, the communication unit, the relay module 1 and the induction circuit 2 and supplies power to the processing unit, the communication unit, the relay module 1 and the induction circuit 2. Alternatively, the power supply unit may include an on-power supply and a power conversion chip connected to the on-power supply to convert the on-power supply into a desired voltage output, for example, the final output voltage of the power conversion chip of the power supply unit is VCC.
Referring to fig. 1, the induction circuit 2 includes an oscillator and a switching unit, the oscillator being connected to the switching unit, the switching unit being connected to the relay module 1 and an output voltage VCC of the power supply unit. Optionally, the oscillator includes a first inductor L1 and a first capacitor C1, and the first inductor L1 and the first capacitor C1 are connected in parallel.
Referring to fig. 1, the switching unit includes a first transistor Q1, a second transistor Q2, a first resistor R1, a second resistor R2, a third resistor R3, a second inductor L2, a second capacitor C2, a first diode D1, a second diode D2, a fourth resistor R4, and a fifth resistor R5. One end of the first resistor R1 is connected to one end of the second capacitor C2, the collector of the first triode Q1, the negative electrode of the second diode D2, and the other end of the fourth resistor R4, the first resistor R1 is connected to the power supply unit (output voltage VCC) through the fourth resistor R4, the other end of the first resistor R1 is connected to the base of the first triode Q1 and the positive electrode of the first diode D1, and the first resistor R1 is connected to one end of the first inductor L1 through the first diode D1. The other end of the first inductor L1 is connected with one end of the second inductor L2 and one end of the second resistor R2, the other end of the second resistor R2 is connected with the emitter of the first triode Q1, the other end of the second inductor L2 is connected with the other end of the second capacitor C2 and one end of the third resistor R3, the other end of the third resistor R3 is connected with the base electrode of the second triode Q2 and one end of the fifth resistor R5, the emitter of the second triode Q2, the anode of the second diode D2 and the other end of the fifth resistor R5 are grounded, and the collector of the second triode Q2 is connected with the relay module 1.
As shown in fig. 2, the induction circuit 2 is provided inside the casing of the charging pile 200. Alternatively, the inside of the case is provided with the charging gun receptacle 201, and in particular, the induction circuit 2 may be provided on the back surface of the charging gun receptacle 201, for example, on the inner surface of the opposite side of the charging gun receptacle 201 from the side on which the charging gun 100 is inserted. Therefore, the device is not affected by sunlight and rainwater, is convenient to install, and has long service life, and new and old equipment can be installed adaptively. Alternatively, the relay module, the processing unit, the communication unit, and the power supply unit may be provided inside the case of the charging stake 200.
In the related art, as shown in fig. 3 (a), the alternating current charging gun head is provided with a plurality of metal terminals, for example, a CC port transmits a connection signal of a charging pile and an electric vehicle, a CP port transmits a communication signal, the magnitude of charging current is determined by the duty ratio of a vehicle-mounted communication PWM wave, L1 is a single-phase live wire, L2 and L3 are three-phase standby ports, an N end is a zero line port, and a PE port is equipment ground. The DC charging gun head shown in FIG. 3 (b) is provided with a plurality of metal terminals, for example, CC1 and CC2 are charging connection confirmation terminals, S+ and S-are CAN communication terminals, DC+ and DC-are positive and negative terminals of a DC power supply, A+ and A-are positive and negative terminals of a low-voltage auxiliary power supply, and PE terminal is equipment ground. Therefore, both the alternating current charging gun head and the direct current charging gun head are provided with metal terminals which can be used for induction of an induction circuit.
As shown in fig. 1, the relay module 1 according to the embodiment of the present application includes a sixth resistor R6, a third triode D3, a coil, and a switch K1, where a normal open end (NO) and a normal closed end (NC) are connected to the processing unit, and a common end COM may be connected to a power line, such as a fire wire.
As shown in fig. 1 and 2, the following describes a specific working procedure of an embodiment of the present application:
1. Assuming that the metal terminal is not close to the first inductor L1 of the oscillator, VCC supplies power to the first inductor L1 and the first capacitor C1 through the first resistor R1 and the first diode D1, the first inductor L1 and the first capacitor C1 generate high-frequency oscillation, when the LC oscillation waveform is in a positive half cycle, the voltage of the oscillator is positive and negative from top to bottom, the base voltage of the first triode Q1 is higher, the base current is larger, the conduction current of the collector and the emitter of the first triode Q1 is larger, the base current flowing into the second resistor R2 through the second resistor L2 and the third resistor R3 is larger, meanwhile, the second capacitor C2 is discharged, the conduction current of the second triode Q2 is larger, the voltage of the collector is small, the relay module 1 is electrified, the working state of the relay module 1 is in a closed state (the switch K1 is in a normally open state (NO)), when the oscillation waveform of the LC is in a negative half cycle, the voltage of the oscillator is positive and negative from top to bottom, the conduction current of the first triode Q1 is lower, the base current flowing into the second resistor R2 through the second resistor R2 and the third resistor R2 is in a normally open state, the second triode Q2 is electrified, and the second triode Q2 is in a normally open state.
2. If the charging gun 100 is inserted into the charging gun socket 201, at this time, the metal terminal of the charging gun 100 approaches the first inductor L1 of the oscillator, and an eddy current phenomenon occurs on the metal surface, the eddy current phenomenon reacts to the first inductor L1, so that the inductance becomes smaller, the LC oscillator stops oscillating, the first inductor L1 and the second inductor L2 correspond to a short circuit, the first capacitor C1 and the second capacitor C2 correspond to an open circuit for the dc signal, the base current of the first triode Q1 becomes smaller, and most of the current flows through the first diode D1 to the third resistor R3 and the fifth resistor R5 to the ground, so that the base current of the second triode Q2 is small, the second triode Q2 is in an off state, the relay module power supply does not form a loop, and is in an off state, and the operating state of the relay module 1 is in an off state (the switch K1 is output in a normally closed state (NC)).
It should be noted that, the processing unit may perform homing detection according to the working state, for example, the working state of the relay module 1 is a closed state or an open state, the levels of NO and NC may change, for example, NC is a high level and/or NO is a low level, the processing unit may know that the charging gun 100 has been homing, N0 is a high level and/or NC is a low level, and the processing unit may know that the charging gun 100 has not been homing.
In the embodiment of the application, the processing unit can be composed of any one or more processor chips including an MCU singlechip, FPGA, CPLD, DSP, ARM and the like. The communication unit can upload the homing detection result of the processing unit to the server of the charging pile 200, and the homing state query and report are realized through the communication module and the server, so that the charging gun can be reset in time through the pushing of the server to a user or a worker, and the charging gun is prevented from being damaged due to a severe environment. For example, the server may determine whether the charging gun is in an idle non-homing condition (the charging gun is not homing and the electric vehicle is not connected in a non-homing state) according to the homing state of the charging gun and the connection state of the charging gun and the electric vehicle, and then prompt the user, the staff and other operations to strive for the first time to homing the charging gun.
The induction circuit 2 of the embodiment of the application realizes the homing detection of the charging gun of the charging pile by utilizing the non-contact metal eddy current detection principle, has the advantages of more simple and convenient online automatic and reliable detection and no need of manual investigation, and has adjustable sensitivity, adjustable proximity detection distance, simple installation, low cost and high stability.
As shown in fig. 2, an embodiment of the present application further provides a charging pile 200, including the above-mentioned charging gun homing detection device.
As shown in fig. 2, optionally, charging stake 200 may further include a display 202, display 202 coupled to the processing unit, including, but not limited to, displaying the charging time, the homing status of charging gun 100, text prompting the user to home charging gun 100, and the like.
While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and the equivalent modifications or substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.
Claims (10)
1. The utility model provides a rifle that charges detection device that returns to position which characterized in that includes:
a relay module;
The induction circuit is connected with the relay module and is used for inducing a metal terminal of the charging gun to change the working state of the relay module;
And the processing module is connected with the relay module and is used for homing detection according to the working state.
2. The apparatus of claim 1, wherein the processing module comprises a power unit and a processing unit, and the power unit is connected to the processing unit, the relay module and the sensing circuit.
3. The recharging gun homing detection apparatus of claim 2, wherein the sensing circuit comprises an oscillator and a switch unit, the oscillator is connected with the switch unit, and the switch unit is connected with the relay module and the power supply unit.
4. The recharging gun homing detection apparatus of claim 3, wherein the oscillator comprises a first inductor and a first capacitor, the first inductor and the first capacitor are connected in parallel, and the first inductor and the first capacitor are connected with the switch unit.
5. The recharging gun homing detection device of claim 4, wherein the switch unit comprises a first triode, a second triode, a first resistor, a second resistor, a third resistor, a second inductor and a second capacitor, one end of the first resistor is connected with one end of the second capacitor, a collector of the first triode and the power supply unit, the other end of the first resistor is connected with a base of the first triode and one end of the first inductor, the other end of the first inductor is connected with one end of the second inductor and one end of the second resistor, the other end of the second resistor is connected with an emitter of the first triode, the other end of the second inductor is connected with the other end of the second capacitor and one end of the third resistor, the other end of the third resistor is connected with the base of the second triode, the emitter of the second triode is grounded, and the collector of the second triode is connected with the relay module.
6. The recharging gun homing detection device of claim 5, wherein the switch unit further comprises a first diode, a second diode, a fourth resistor and a fifth resistor, one end of the fourth resistor is connected with the power supply unit, the other end of the fourth resistor is connected with one end of the first resistor and the negative electrode of the second diode, the positive electrode of the second diode is grounded, one end of the fifth resistor is connected with the base electrode of the second triode, the other end of the fifth resistor is grounded, the positive electrode of the first diode is connected with the base electrode of the first triode, and the negative electrode of the first diode is connected with one end of the first inductor.
7. The homing detection device for the charging gun of any one of claims 2-5, wherein the induction circuit is arranged inside a box body of the charging pile.
8. The recharging gun homing detection apparatus of claim 6, wherein the induction circuit is disposed on a back surface of a recharging gun receptacle for inserting the recharging gun.
9. The apparatus of claim 2 to 5, wherein the processing module further comprises a communication unit, and the communication unit is connected to the power supply unit and the processing unit.
10. A charging pile comprising the gun homing detection device according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420876113.7U CN222473943U (en) | 2024-04-24 | 2024-04-24 | Charging gun return detection device and charging pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420876113.7U CN222473943U (en) | 2024-04-24 | 2024-04-24 | Charging gun return detection device and charging pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222473943U true CN222473943U (en) | 2025-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420876113.7U Active CN222473943U (en) | 2024-04-24 | 2024-04-24 | Charging gun return detection device and charging pile |
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| CN (1) | CN222473943U (en) |
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- 2024-04-24 CN CN202420876113.7U patent/CN222473943U/en active Active
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