Charging pile test simulator with various vehicle sockets

Abstract

The utility model discloses a charging pile test simulator with various vehicle sockets, and relates to the field of charging pile test. When a charging gun of the charging pile is inserted into any vehicle socket, the charging pile generates a CP signal and sends the CP signal to the CP circuit through a CP pin of the vehicle socket; the CP circuit is used for carrying out voltage division processing on a CP signal; the charging pile detects a voltage division value of the CP circuit, determines a physical connection state of the vehicle socket and the charging gun based on the voltage division value, and outputs an alternating current power supply to the corresponding vehicle socket and the AC-DC power supply through a power supply pin of the vehicle socket based on the physical connection state; the LED indication module is connected with one end of a CC signal circuit in the charging gun through a CC signal pin of the vehicle socket; the LED indication module is used for indicating the physical connection state of the charging gun and the complete state of the CC signal circuit; by integrating various vehicle sockets of different types, the production environment is simplified, and the test efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of charging pile testing, and in particular to a charging pile testing simulator with multiple vehicle sockets. Background Technology

[0002] With the rapid expansion of the new energy vehicle market, the demand for AC charging piles has increased significantly, with power typically ranging from 3.5KW to 22KW. However, a key challenge for manufacturers is limited production capacity, primarily because each charging pile needs to undergo specialized testing and simulation equipment to verify its compatibility with electric vehicle sockets before leaving the factory. Currently, most testing simulators on the market are equipped with a limited variety and number of charging gun sockets.

[0003] The original design purpose of this simulator was to simplify the production environment and improve testing efficiency by using different ports on the same simulator to test charging piles of different standards during production. Specifically, this test simulator simulates vehicle sockets of different standards, allowing for rapid switching of test standards on the production line without changing or adjusting test equipment. This not only significantly reduces testing time but also lowers production and time costs, effectively solving a bottleneck problem that restricts industry development. In this way, manufacturers can significantly increase production capacity while ensuring product quality, meeting ever-growing market demand. Utility Model Content

[0004] To integrate multiple standard interfaces, this utility model proposes a charging pile test simulator with multiple vehicle sockets, including:

[0005] AC-DC power supply, CP circuit, LED indicator module and multiple vehicle sockets of different standards, each vehicle socket including CC signal pin, CP pin and power supply pin;

[0006] When the charging gun of the charging pile is plugged into any vehicle socket, the charging pile generates a PWM signal of a preset frequency, namely the CP signal, and sends it to the CP circuit through the CP pin of the vehicle socket; the CP circuit performs voltage division processing on the CP signal; the charging pile detects the voltage division value of the CP circuit, determines the physical connection status between the vehicle socket and the charging gun based on the voltage division value, and outputs AC power to the corresponding vehicle socket and AC-DC power supply through the power pin of the vehicle socket based on the physical connection status;

[0007] The LED indicator module is connected to one end of the CC signal circuit in the charging gun via the CC signal pin of the vehicle socket.

[0008] The LED indicator module is electrically connected to the AC-DC power supply and is used to indicate the physical connection status of the charging gun and the complete status of the CC circuit.

[0009] Furthermore, the LED indicator module includes:

[0010] The first indicator unit is used to indicate the complete state of the CC circuit in the charging gun;

[0011] The second indicator unit is used to indicate the physical connection status between the vehicle socket and the charging gun.

[0012] Furthermore, the first indicator unit includes: a third LED and a fifth resistor R5;

[0013] The second indicator unit includes: a first LED, a third resistor R3, a second LED, and a fourth resistor R4; wherein:

[0014] The negative terminal of the first LED is connected to one end of the third resistor R3; the other end of the third resistor R3 is grounded; the negative terminal of the second LED is connected to one end of the fourth resistor R4; the other end of the fourth resistor R4 is grounded; the negative terminal of the third LED is connected to one end of the fifth resistor R5; the other end of the fifth resistor R5 is connected to the CC signal pin of the vehicle socket; the positive terminals of the first, second, and third LEDs are simultaneously connected to the power output pin of the AC-DC power supply.

[0015] Furthermore, in any vehicle socket: the power pin includes multiple phase line pins;

[0016] When any vehicle socket is plugged into the charging gun, each phase line pin is connected to the corresponding phase line in the charging gun. The fifth resistor R5 in the LED indicator module is connected to one end of the CC signal circuit in the charging gun through the CC signal pin of the vehicle socket. The other end of the CC signal circuit is connected to ground, thus forming a CC signal loop. When the CC signal loop is in a grounded state, the third LED in the first indicator unit lights up, indicating that the CC signal circuit is in a complete state.

[0017] Furthermore, the CP circuit includes:

[0018] The first diode VD1; the positive terminal of the first diode VD1 is connected to the CP pin of the vehicle socket, and the negative terminal is connected to one end of the first switch S1; the other end of the first switch S1 is connected to one end of the second resistor R2 and the first resistor R1; the other end of the first resistor R1 is connected to one end of the second switch S2; the other end of the second switch S2 and the other end of the second resistor R2 share a common ground.

[0019] Furthermore, the charging pile includes:

[0020] A voltage sampling circuit connected to the positive terminal of the first diode VD1 in the CP circuit is used to detect the voltage division value of the CP circuit.

[0021] Furthermore, the charging pile test simulator also includes:

[0022] A load socket includes: multiple phase line pins and a third pin; each phase line pin is connected to a corresponding phase line in the charging gun; the third pin is grounded.

[0023] The charging pile is also used to output AC power to the load through the phase line pin of the load socket based on the physical connection status between the vehicle socket and the charging gun.

[0024] Furthermore, the AC-DC power supply includes:

[0025] The sixth chip includes a fourth pin, a power output pin, and multiple phase line pins; each phase line pin is connected to the corresponding phase line in the charging gun, and the fourth pin is grounded.

[0026] Furthermore, the standard types of the vehicle socket include:

[0027] Chinese national standard, American standard, European standard and J3400 standard.

[0028] Furthermore, the charging pile test simulator also includes:

[0029] An AC voltmeter and ammeter are used to measure the output voltage and current of a charging gun.

[0030] Compared with the prior art, the present invention has at least the following beneficial effects:

[0031] (1) In this utility model, when the charging gun of the charging pile is inserted into any vehicle socket, the charging pile generates a PWM signal of a preset frequency, namely a CP signal, and sends it to the CP circuit through the CP pin of the vehicle socket; the CP circuit performs voltage division processing on the CP signal; the charging pile detects the voltage division value of the CP circuit, determines the physical connection state between the vehicle socket and the charging gun based on the voltage division value, and outputs AC power to the corresponding vehicle socket and AC-DC power supply through the power supply pin of the vehicle socket based on the physical connection state; the LED indicator module is connected to one end of the CC signal circuit in the charging gun through the CC signal pin of the vehicle socket; the LED indicator module is electrically connected to the AC-DC power supply and is used to indicate the physical connection state of the charging gun and the complete state of the CC signal circuit; by integrating multiple different types of vehicle sockets, it completes the testing of different standard charging piles using different sockets of the same simulator, thereby simplifying the production environment and improving testing efficiency.

[0032] (2) Since this utility model can perform multiple standard tests on one device, manufacturers do not need to purchase and maintain multiple test simulators of different standards, thereby reducing equipment procurement and maintenance costs, reducing time consumption during the testing process, and further saving human and material resources.

[0033] (3) This utility model detects the integrity of the CC circuit, thus avoiding safety hazards caused by poor contact and other problems;

[0034] (4) The LED indicator module equipped with this utility model provides intuitive status feedback, allowing operators to quickly understand the functional status of the charging gun (such as whether it is correctly inserted, whether the CC circuit is complete, etc.), simplifying the operation process and reducing the possibility of misoperation.

[0035] (5) In this utility model, the CP circuit performs voltage division processing on the CP signal, the charging pile detects the voltage division value of the CP circuit, and outputs AC power to the corresponding vehicle socket and AC-DC power supply through the power pin of the vehicle socket based on the voltage division value, thereby ensuring the intelligence and efficiency of the charging process.

[0036] (6) In this invention, after the charging pile confirms the physical connection status between the charging gun and the vehicle socket, it supplies power to the external device through the load socket based on this status. This design not only expands the functionality of the test simulator, enabling it to be used not only for compatibility verification of charging piles, but also to simulate the working state under actual load conditions, further ensuring the stability and reliability of the charging pile under different load conditions. Attached Figure Description

[0037] Figure 1 A modular structure diagram of a charging pile test simulator equipped with multiple vehicle sockets;

[0038] Figure 2 This is the circuit diagram for a vehicle socket according to the national standard (GB 20234.2).

[0039] Figure 3 Circuit diagram for a US standard (SAE J1772) vehicle socket;

[0040] Figure 4 The circuit diagram for the socket in a Tesla vehicle with the J3400 designation;

[0041] Figure 5 This is a circuit diagram for a vehicle socket conforming to the European standard (IEC 62196.2).

[0042] Figure 6 This is the circuit diagram for the LED indicator module;

[0043] Figure 7 This is the circuit diagram for the CP circuit;

[0044] Figure 8 Circuit diagram for AC-DC power supply;

[0045] Figure 9 The circuit diagram for the load socket;

[0046] Figure 10 The circuit diagram for an AC voltmeter and ammeter;

[0047] Figure 11 This is a schematic diagram showing the connection between the voltage sampling circuit and the CP circuit inside the charging pile.

[0048] Figure 12 This is a schematic diagram showing the connection between the CC signal circuit and the LED indicator module in the charging gun. Detailed Implementation

[0049] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0050] In order to integrate multiple standard interfaces, such as Figure 1 As shown, this utility model proposes a charging pile test simulator with multiple vehicle sockets, including:

[0051] AC-DC power supply, CP circuit, LED indicator module and multiple vehicle sockets of different standards, each vehicle socket including CC signal pin, CP pin and power supply pin;

[0052] The standard types of vehicle sockets include:

[0053] Chinese national standard (GB / T), American standard (SAE J1772), European standard (IEC 62196.2) and J3400 standard (Tesla).

[0054] When the charging gun of the charging pile is plugged into any vehicle socket, the charging pile generates a PWM signal of a preset frequency, namely the CP signal, and sends it to the CP circuit through the CP pin of the vehicle socket; the CP circuit performs voltage division processing on the CP signal; the charging pile detects the voltage division value of the CP circuit, determines the physical connection status between the vehicle socket and the charging gun based on the voltage division value, and outputs AC power to the corresponding vehicle socket and AC-DC power supply through the power pin of the vehicle socket based on the physical connection status;

[0055] like Figure 7 As shown, the CP circuit includes:

[0056] The first diode VD1; the positive terminal of the first diode VD1 is connected to the CP pin of the vehicle socket, and the negative terminal is connected to one end of the first switch S1; the other end of the first switch S1 is connected to one end of the second resistor R2 and the first resistor R1; the other end of the first resistor R1 is connected to one end of the second switch S2; the other end of the second switch S2 and the other end of the second resistor R2 share a common ground.

[0057] The charging pile includes:

[0058] A voltage sampling circuit connected to the positive terminal of the first diode VD1 in the CP circuit is used to detect the voltage division value of the CP circuit.

[0059] It should be noted that when the charging gun is inserted, the CP circuit performs voltage division on the CP signal due to the voltage divider network. The charging station monitors this voltage division value to confirm whether the charging gun has been correctly inserted and a physical connection has been established. Specifically:

[0060] After R1 and R2 are connected in parallel, they are then connected to the charging station as follows: Figure 11 The voltage sampling circuit shown uses resistor R0 connected in series to form a voltage divider circuit. When S1 is open, the charging station detects a 12V voltage (12V refers to a stable DC power supply that provides the operating voltage for the CP circuit); when S1 is closed and S2 is open, the charging station detects a 9V voltage; when both S1 and S2 are closed, the charging station detects a 6V voltage. To verify whether the CP signal has undergone correct voltage division, the following steps can be taken:

[0061] 1. The voltage of the CP signal source and the voltage division value of the CP circuit are detected by the voltage sampling circuit connected to the positive terminal of the first diode VD1 in the CP circuit, which is the measured value (CP-AD).

[0062] 2. Calculate the expected voltage division ratio based on the resistance values. For example, if R1 = 1.3KΩ, R2 = 2.7KΩ, and R0 = 1KΩ at the charging pile terminal, then:

[0063] When S1 is closed and S2 is open, the voltage at the CP terminal, i.e., the voltage divider value, is:

[0064] 0.7V+(12V-0.7V)*(R2 / (R0+R2));

[0065] When both S1 and S2 are closed, the voltage at the CP terminal, i.e., the voltage divider value, is:

[0066] 0.7V+(12V-0.7V)*((R1 / / R2) / (R0+R1 / / R2)).

[0067] Where 0.7V is the forward voltage drop of the first diode VD1.

[0068] 3. Compare the measured value with the expected value: If the measured voltage division value is consistent with the calculated expected value, it means that the CP signal has passed the correct voltage division.

[0069] Only after the CP signal has undergone proper voltage division will the charging station supply power to the corresponding vehicle socket and AC-DC power supply. After receiving the power, the AC-DC power supply outputs 5V to light up LED1 and LED2. Therefore, if LED1 and LED2 are lit, it indirectly indicates that the CP signal has undergone proper voltage division processing.

[0070] The LED indicator module is connected to one end of the CC signal circuit in the charging gun via the CC signal pin of the vehicle socket.

[0071] The LED indicator module is electrically connected to the AC-DC power supply and is used to indicate the physical connection status of the charging gun and the complete status of the CC circuit.

[0072] like Figure 6 As shown, the LED indicator module includes:

[0073] The first indicator unit is used to indicate the complete state of the CC circuit in the charging gun;

[0074] The second indicator unit is used to indicate the physical connection status between the vehicle socket and the charging gun.

[0075] The first indicator unit includes: a third LED and a fifth resistor R5;

[0076] The second indicator unit includes: a first LED, a third resistor R3, a second LED, and a fourth resistor R4; wherein:

[0077] The negative terminal of the first LED is connected to one end of the third resistor R3; the other end of the third resistor R3 is grounded; the negative terminal of the second LED is connected to one end of the fourth resistor R4; the other end of the fourth resistor R4 is grounded; the negative terminal of the third LED is connected to one end of the fifth resistor R5; the other end of the fifth resistor R5 is connected to the CC signal pin of the vehicle socket; the positive terminals of the first, second, and third LEDs are simultaneously connected to the power output pin of the AC-DC power supply.

[0078] In any vehicle socket: the power pin includes multiple phase line pins;

[0079] When any vehicle socket is plugged into the charging gun, each phase wire pin is connected to the corresponding phase wire in the charging gun. The fifth resistor R5 in the LED indicator module is connected to the charging gun through the CC signal pin of the vehicle socket. Figure 12One end of the CC signal circuit shown is connected, and the other end of the CC signal circuit is connected to ground, thus forming a CC signal loop. When the CC signal loop is in a grounded state, the third LED in the first indicator unit lights up, indicating that the CC signal circuit is in a complete state.

[0080] In this embodiment, Figure 2 The vehicle socket shown is conforming to the national standard (GB 20234.2). Figure 5 In the European standard (IEC62196.2) vehicle socket shown, the CC signal pin refers to the fifth pin, and the CP pin refers to the sixth pin. Figure 3 The US standard (SAE J1772) vehicle socket shown is... Figure 4 In the J3400 (Tesla) vehicle socket shown, the CC signal pin refers to the third pin, and the CP pin refers to the fourth pin.

[0081] Additionally, it should be noted that:

[0082] Chinese national standard (GB 20234.2) and European standard (IEC 62196.2): ​​Both standards require that the charging gun be compatible with both single-phase and three-phase charging. Therefore, under these standards, the vehicle socket should have four pins: L1, L2, L3, and N. L1 and N should be used for single-phase charging, and L1, L2, L3, and N should be used for three-phase charging.

[0083] American Standard (SAE J1772) and J3400 Standard (Tesla): This standard is primarily for single-phase charging, but it also supports dual-phase (L1 and L2) in some applications. Since L2 and N share a single wire, they are uniformly labeled as "L2 / N" in the simulator.

[0084] Figures 2 to 5 The L1, L2, L3, and N shown represent the phase line pins. Additionally, Figures 2 to 5 as well as Figure 9 The U1, U2, U3, U4, and U5 shown here simply represent vehicle sockets of different standards. They do not contain any internal chips; instead, they are constructed of copper connectors for direct connection to the charging gun. These sockets are designed purely to provide physical connection points and ensure compatibility with the corresponding charging gun standards, without involving any electronic control or processing functions. Therefore, U1, U2, U3, U4, and U5 represent mechanical and electrical connection components, not integrated circuit units with data processing capabilities.

[0085] The charging pile test simulator also includes:

[0086] like Figure 9The load socket shown includes: multiple phase line pins and a third pin; each phase line pin is connected to a corresponding phase line in the charging gun; the third pin is grounded;

[0087] The charging pile is also used to output AC power to the load through the phase line pin of the load socket based on the physical connection status between the vehicle socket and the charging gun.

[0088] like Figure 8 As shown, the AC-DC power supply includes:

[0089] The sixth chip includes a fourth pin, a power output pin, and multiple phase line pins; each phase line pin is connected to the corresponding phase line in the charging gun, and the fourth pin is grounded.

[0090] The charging pile test simulator also includes:

[0091] like Figure 10 The AC voltage and current meter shown is used to measure the output voltage and output current of the charging gun.

[0092] Figure 10 In the middle, the L1 line passes through the CT magnetic ring to measure the current.

[0093] It should be noted that in this embodiment, all vehicle sockets (including those conforming to Chinese, American, European, and Tesla standards) can share a set of core components, including an LED indicator module, a CP circuit, an AC-DC power supply, and an AC voltmeter and ammeter. This integrated design not only simplifies the equipment structure but also reduces cost and complexity.

[0094] In this invention, when the charging gun of the charging pile is inserted into any vehicle socket, the charging pile generates a PWM signal (CP signal) of a preset frequency and sends it to the CP circuit through the CP pin of the vehicle socket. The CP circuit performs voltage division processing on the CP signal. The charging pile detects the voltage division value of the CP circuit, determines the physical connection status between the vehicle socket and the charging gun based on the voltage division value, and outputs AC power to the corresponding vehicle socket and AC-DC power supply through the power pin of the vehicle socket based on the physical connection status. The LED indicator module is connected to one end of the CC signal circuit in the charging gun through the CC signal pin of the vehicle socket. The LED indicator module is electrically connected to the AC-DC power supply and is used to indicate the physical connection status of the charging gun and the complete status of the CC signal circuit. By integrating multiple different types of vehicle sockets, it uses different ports of the same simulator to complete the testing of charging piles of different standards, thereby simplifying the production environment and improving testing efficiency.

[0095] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0096] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0097] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0098] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A charging pile test simulator equipped with multiple vehicle sockets, characterized in that, include: AC-DC power supply, CP circuit, LED indicator module and multiple vehicle sockets of different standards, each vehicle socket including CC signal pin, CP pin and power supply pin; When the charging gun of the charging pile is plugged into any vehicle socket, the charging pile generates a PWM signal of a preset frequency, namely the CP signal, and sends it to the CP circuit through the CP pin of the vehicle socket; the CP circuit performs voltage division processing on the CP signal; the charging pile detects the voltage division value of the CP circuit, determines the physical connection status between the vehicle socket and the charging gun based on the voltage division value, and outputs AC power to the corresponding vehicle socket and AC-DC power supply through the power pin of the vehicle socket based on the physical connection status; The LED indicator module is connected to one end of the CC signal circuit in the charging gun via the CC signal pin of the vehicle socket. The LED indicator module is electrically connected to the AC-DC power supply and is used to indicate the physical connection status of the charging gun and the complete status of the CC circuit.

2. The charging pile test simulator with multiple vehicle sockets according to claim 1, characterized in that, The LED indicator module includes: The first indicator unit is used to indicate the complete state of the CC circuit in the charging gun; The second indicator unit is used to indicate the physical connection status between the vehicle socket and the charging gun.

3. A charging pile test simulator with multiple vehicle sockets according to claim 2, characterized in that, The first indicator unit includes: a third LED and a fifth resistor R5; The second indicator unit includes: a first LED, a third resistor R3, a second LED, and a fourth resistor R4; wherein: The negative terminal of the first LED is connected to one end of the third resistor R3; the other end of the third resistor R3 is grounded; the negative terminal of the second LED is connected to one end of the fourth resistor R4; the other end of the fourth resistor R4 is grounded; the negative terminal of the third LED is connected to one end of the fifth resistor R5; the other end of the fifth resistor R5 is connected to the CC signal pin of the vehicle socket; the positive terminals of the first, second, and third LEDs are simultaneously connected to the power output pin of the AC-DC power supply.

4. A charging pile test simulator with multiple vehicle sockets according to claim 3, characterized in that, In any vehicle socket: the power pin includes multiple phase line pins; When any vehicle socket is plugged into the charging gun, each phase line pin is connected to the corresponding phase line in the charging gun. The fifth resistor R5 in the LED indicator module is connected to one end of the CC signal circuit in the charging gun through the CC signal pin of the vehicle socket. The other end of the CC signal circuit is connected to ground, thus forming a CC signal loop. When the CC signal loop is in a grounded state, the third LED in the first indicator unit lights up, indicating that the CC signal circuit is in a complete state.

5. A charging pile test simulator with multiple vehicle sockets according to claim 1, characterized in that, The CP circuit includes: The first diode VD1; the positive terminal of the first diode VD1 is connected to the CP pin of the vehicle socket, and the negative terminal is connected to one end of the first switch S1; the other end of the first switch S1 is connected to one end of the second resistor R2 and the first resistor R1; the other end of the first resistor R1 is connected to one end of the second switch S2; the other end of the second switch S2 and the other end of the second resistor R2 share a common ground.

6. A charging pile test simulator with multiple vehicle sockets according to claim 5, characterized in that, The charging pile includes: A voltage sampling circuit connected to the positive terminal of the first diode VD1 in the CP circuit is used to detect the voltage division value of the CP circuit.

7. A charging pile test simulator with multiple vehicle sockets according to claim 1, characterized in that, The charging pile test simulator also includes: A load socket includes: multiple phase line pins and a third pin; each phase line pin is connected to a corresponding phase line in the charging gun; the third pin is grounded. The charging pile is also used to output AC power to the load through the phase line pin of the load socket based on the physical connection status between the vehicle socket and the charging gun.

8. A charging pile test simulator with multiple vehicle sockets according to claim 1, characterized in that, The AC-DC power supply includes: The sixth chip includes a fourth pin, a power output pin, and multiple phase line pins; each phase line pin is connected to the corresponding phase line in the charging gun, and the fourth pin is grounded.

9. A charging pile test simulator with multiple vehicle sockets according to claim 1, characterized in that, The standard types of vehicle sockets include: Chinese national standard, American standard, European standard and J3400 standard.

10. A charging pile test simulator with multiple vehicle sockets according to claim 1, characterized in that, The charging pile test simulator also includes: An AC voltmeter and ammeter are used to measure the output voltage and current of a charging gun.

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