National standard-to-CHAOJI charging interface

Abstract

The utility model relates to the technical field of vehicle charging, and discloses a national standard-to-CHAOJI charging interface, which enables a national standard vehicle to be compatible with a CHAOJI control guide loop on the basis of an original GB charging interface loop by installing a conversion device between a CHAOJI interface corresponding to a CHAOJI charging pile and a national standard interface corresponding to a national standard vehicle. When the national standard vehicle BMS recognizes the specific resistance value of the CC2 resistor of the national standard interface, the internal software protocol of the national standard vehicle BMS is switched from GB to CHAOJI, so that the national standard vehicle is compatible with two charging standards of GB and CHAOJI at the same time, and the charging experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle charging, in particular to a national standard to CHAOJI charging interface. Background Art

[0002] With the development of electric vehicles and the increasing requirements for charging efficiency, it is necessary to realize the high-power fast charging function of the vehicle. One feasible direction is to increase the vehicle voltage platform. By increasing the vehicle voltage platform, the charging voltage is increased to increase the charging power. Therefore, CHAOJI technology came into being. At present, both CHAOJI and GB charging standards have been released, and the market has not clarified the subsequent interface development trend. Therefore, in the foreseeable future, there will be a situation where GB DC piles and CHAOJI fast charging piles coexist in the market. According to the current number of GB DC piles in the market, it can be foreseen that the coexistence of the two DC fast charging piles will last for a long time. At present, Human Horizons is developing according to the GB charging standard. If CHAOJI interface charging piles are encountered in the market in the future, there will be problems with charging failure. Therefore, it is urgent to realize a vehicle charging method that is compatible with both CHAOJI and GB charging standards. Utility Model Content

[0003] The purpose of the utility model is to provide a national standard to CHAOJI charging interface, which can be compatible with the CHAOJI control guidance circuit on the basis of the original GB charging interface circuit. It only requires software compatibility with the two charging protocols to achieve compatibility with both CHAOJI and GB charging standards, thereby improving the user's charging experience.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a national standard to CHAOJI charging interface, which is used to connect a CHAOJI charging pile and a national standard vehicle, including a CHAOJI interface corresponding to the CHAOJI charging pile, a national standard interface corresponding to the national standard vehicle and a conversion device, wherein the national standard interface is connected to the CHAOJI interface through the conversion device, and the conversion device includes a DC+ line, a DC- line, a PE line, an S+ line, an S- line, and a detection component, wherein one end of the DC+ line is connected to the DC+ line of the CHAOJI charging pile, and the other end of the DC+ line is connected to the DC+ line of the national standard vehicle, one end of the DC- line is connected to the DC- line of the CHAOJI charging pile, and the other end of the DC- line is connected to the DC- line of the national standard vehicle, and one end of the PE line is connected to the DC+ line of the CHAOJI charging pile, and the other end of the DC- line is connected to the DC- line of the national standard vehicle. It is connected to the CHAOJI charging pile PE line, and the other end of the PE line is connected to the national standard vehicle PE line. One end of the S+ line is connected to the CHAOJI charging pile S+ line, and the other end of the S+ line is connected to the national standard vehicle S+ line. One end of the S- line is connected to the CHAOJI charging pile S- line, and the other end of the S- line is connected to the national standard vehicle S- line. If the first end of the detection component is connected to the CC1 interface of the national standard vehicle, the second end of the detection component is connected to the CC1 interface of the CHAOJI charging pile. If the first end of the detection component is connected to the CC2 interface of the national standard vehicle, the second end of the detection component is connected to the CHAOJI charging pile PE line through the detection resistor (Rc) of the CHAOJI charging pile.

[0005] In some embodiments, the detection component is a single resistor, an equivalent resistor of multiple resistors connected in series and parallel, or a combination of a diode and a resistor.

[0006] In some embodiments, the detection component is used to identify the two charging standards, GB and CHAOJI, of the charging pile to which the national standard vehicle is connected.

[0007] In some embodiments, when the first end of the detection component is connected to the CC1 interface of the national standard vehicle, the detection component includes a diode (D1), a first resistor (Rx) and a second resistor (Ry), the positive electrode of the diode (D1) is connected to the CC1 interface of the CHAOJI charging pile, the negative electrode of the diode (D1) is connected to one end of the first resistor (Rx), the other end of the first resistor (Rx) is connected to the PE line, one end of the second resistor (Ry) is connected to the negative electrode of the diode (D1), and the other end of the second resistor (Ry) is connected to the CC1 interface of the national standard vehicle.

[0008] In other embodiments, when the first end of the detection component is connected to the CC1 interface of the national standard vehicle, the detection component includes a diode (D1), a first resistor (Rx), a second resistor (Ry) and a third resistor (Ri), the positive electrode of the diode (D1) is connected to the CC1 interface of the CHAOJI charging pile, the negative electrode of the diode (D1) is connected to one end of the first resistor (Rx), the other end of the first resistor (Rx) is connected to the PE line, one end of the second resistor (Ry) is connected to the negative electrode of the diode (D1), the other end of the second resistor (Ry) is connected to the CC1 interface of the national standard vehicle, one end of the third resistor (Ri) is connected to the negative electrode of the diode (D1), and the other end of the third resistor (Ri) is connected to the PE line.

[0009] In some embodiments, when the first end of the detection component is connected to the CC2 interface of the national standard vehicle, the detection component includes a fourth resistor (Rz), one end of the fourth resistor (Rz) is connected to the CHAOJI charging pile PE line through the detection resistor (Rc) of the CHAOJI charging pile, and the other end of the fourth resistor (Rz) is connected to the CC2 interface of the national standard vehicle.

[0010] In other embodiments, when the first end of the detection component is connected to the CC1 interface of the national standard vehicle, the detection component includes a diode (D1), a first resistor (Rx), a second resistor (Ry) and a third resistor (Ri), the positive electrode of the diode (D1) is connected to the CC1 interface of the CHAOJI charging pile, the negative electrode of the diode (D1) is connected to one end of the first resistor (Rx), the other end of the first resistor (Rx) is connected to the PE line, one end of the second resistor (Ry) is connected to the negative electrode of the diode (D1), the other end of the second resistor (Ry) is connected to the CC1 interface of the national standard vehicle, one end of the third resistor (Ri) is connected to the negative electrode of the diode (D1), and the other end of the third resistor (Ri) is connected to the PE line.

[0011] In other embodiments, when the first end of the detection component is connected to the CC2 interface of the national standard vehicle, the detection component includes a fourth resistor (Rz) and a fifth resistor (Rd), one end of the fourth resistor (Rz) is connected to the CHAOJI charging pile PE line through the detection resistor (Rc) of the CHAOJI charging pile, and the other end of the fourth resistor (Rz) is connected to the CC2 interface of the national standard vehicle, one end of the fifth resistor (Rd) is connected to the CHAOJI charging pile PE line through the detection resistor (Rc) of the CHAOJI charging pile, and the other end of the fifth resistor (Rd) is connected to the PE line.

[0012] The embodiment of the utility model provides a national standard to CHAOJI charging interface, which has the following beneficial effects compared with the prior art:

[0013] It can make the national standard vehicle compatible with the CHAOJI control guidance circuit based on the original GB charging interface circuit. The circuit of the national standard to CHAOJI charging interface is externally located in the external charging port adapter. The internal software of the BMS of the national standard vehicle reserves two software protocols at the same time. After the user connects the external charging port adapter, when the BMS recognizes the specific CC2 resistance value of the national standard interface, the internal software protocol of the BMS of the national standard vehicle switches from GB to CHAOJI, so that the national standard vehicle is compatible with both GB and CHAOJI charging standards, thereby improving the user's charging experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of a charging interface structure from a national standard to a CHAOJI charging interface in an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of a detection component for converting a national standard to a CHAOJI charging interface according to an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of another detection component for converting a national standard to a CHAOJI charging interface according to an embodiment of the utility model;

[0017] Figure 4 This is another structural diagram of a detection component for converting a national standard to a CHAOJI charging interface according to an embodiment of the utility model;

[0018] Figure 5 It is a schematic diagram of the structure of a detection component for converting a national standard to a CHAOJI charging interface in an embodiment of the utility model. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0020] In the description of the present invention, it is necessary to understand that the terms "length", "width", "up", "down", etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0022] like Figure 1 As shown, in a preferred embodiment of the utility model, a national standard to CHAOJI charging interface is used to connect a CHAOJI charging pile and a national standard vehicle, including a CHAOJI interface corresponding to the CHAOJI charging pile, a national standard interface corresponding to the national standard vehicle and a conversion device, wherein the national standard interface is connected to the CHAOJI interface through the conversion device, and the conversion device includes a DC+ line, a DC- line, a PE line, an S+ line, an S- line, and a detection component, wherein one end of the DC+ line is connected to the DC+ line of the CHAOJI charging pile, and the other end of the DC+ line is connected to the DC+ line of the national standard vehicle, one end of the DC- line is connected to the DC- line of the CHAOJI charging pile, and the other end of the DC- line is connected to the DC- line of the national standard vehicle, and one end of the PE line is connected to The CHAOJI charging pile PE line is connected, and the other end of the PE line is connected to the national standard vehicle PE line, one end of the S+ line is connected to the CHAOJI charging pile S+ line, and the other end of the S+ line is connected to the national standard vehicle S+ line, one end of the S- line is connected to the CHAOJI charging pile S- line, and the other end of the S- line is connected to the national standard vehicle S- line. If the first end of the detection component is connected to the CC1 interface of the national standard vehicle, the second end of the detection component is connected to the CC1 interface of the CHAOJI charging pile. If the first end of the detection component is connected to the CC2 interface of the national standard vehicle, the second end of the detection component is connected to the CHAOJI charging pile PE line through the detection resistor (Rc) of the CHAOJI charging pile.

[0023] Specifically, the detection component is a single resistor, an equivalent resistor in which multiple resistors are connected in series or parallel, or a combination of a diode and a resistor.

[0024] Specifically, the detection component is used to identify the two charging standards, GB and CHAOJI, of the charging pile to which the national standard vehicle is connected.

[0025] In a specific embodiment, Figure 2 As shown, when the first end of the detection component is connected to the CC1 interface of the national standard vehicle, the detection component includes a diode (D1), a first resistor (Rx) and a second resistor (Ry), the positive electrode of the diode (D1) is connected to the CC1 interface of the CHAOJI charging pile, the negative electrode of the diode (D1) is connected to one end of the first resistor (Rx), the other end of the first resistor (Rx) is connected to the PE line, one end of the second resistor (Ry) is connected to the negative electrode of the diode (D1), and the other end of the second resistor (Ry) is connected to the CC1 interface of the national standard vehicle.

[0026] It should be noted that when the relay S2 of the national standard vehicle is disconnected, after inserting the national standard to CHAOJI charging interface, the vehicle-side R6, R4, and the resistor Ry of the detection component are connected in series. The three resistors are connected in series and then in parallel with the resistor Rx of the detection component. By setting the appropriate resistance values ​​of Rx and Ry, the parallel voltage of (R6+R4+Ry) and Rx is equivalent to R4', such as 2.74kohm.

[0027] During the charging phase, the vehicle needs to be ready according to the Chaoji standard, and relay S2 needs to be closed to make R4 and R4' in parallel. By setting the appropriate resistance value, after the vehicle-side relay S2 is closed, Rx and (Ry+R4) are connected in parallel, so that the parallel resistance is equivalent to the resistance of CHAOJI R4 and R4', such as 0.881kohm.

[0028] In a specific embodiment, Figure 3 As shown, when the first end of the detection component is connected to the CC1 interface of the national standard vehicle, the detection component includes a diode (D1), a first resistor (Rx), a second resistor (Ry) and a third resistor (Ri), the positive electrode of the diode (D1) is connected to the CC1 interface of the CHAOJI charging pile, the negative electrode of the diode (D1) is connected to one end of the first resistor (Rx), the other end of the first resistor (Rx) is connected to the PE line, one end of the second resistor (Ry) is connected to the negative electrode of the diode (D1), the other end of the second resistor (Ry) is connected to the CC1 interface of the national standard vehicle, one end of the third resistor (Ri) is connected to the negative electrode of the diode (D1), and the other end of the third resistor (Ri) is connected to the PE line.

[0029] In a specific embodiment, Figure 4As shown, when the first end of the detection component is connected to the CC2 interface of the national standard vehicle, the detection component includes a fourth resistor (Rz), one end of the fourth resistor (Rz) is connected to the CHAOJI charging pile PE line through the detection resistor (Rc) of the CHAOJI charging pile, and the other end of the fourth resistor (Rz) is connected to the CC2 interface of the national standard vehicle.

[0030] In a specific embodiment, Figure 5 As shown, when the first end of the detection component is connected to the CC2 interface of the national standard vehicle, the detection component includes a fourth resistor (Rz) and a fifth resistor (Rd), one end of the fourth resistor (Rz) is connected to the CHAOJI charging pile PE line through the detection resistor (Rc) of the CHAOJI charging pile, and the other end of the fourth resistor (Rz) is connected to the CC2 interface of the national standard vehicle, one end of the fifth resistor (Rd) is connected to the CHAOJI charging pile PE line through the detection resistor (Rc) of the CHAOJI charging pile, and the other end of the fifth resistor (Rd) is connected to the PE line.

[0031] When the first end of the detection component is connected to the CC1 interface of the national standard vehicle, the detection component includes a diode (D1), a first resistor (Rx), a second resistor (Ry) and a third resistor (Ri), the positive electrode of the diode (D1) is connected to the CC1 interface of the CHAOJI charging pile, the negative electrode of the diode (D1) is connected to one end of the first resistor (Rx), the other end of the first resistor (Rx) is connected to the PE line, one end of the second resistor (Ry) is connected to the negative electrode of the diode (D1), the other end of the second resistor (Ry) is connected to the CC1 interface of the national standard vehicle, one end of the third resistor (Ri) is connected to the negative electrode of the diode (D1), and the other end of the third resistor (Ri) is connected to the PE line.

[0032] It should be noted that since CHAOJI and GB2015 use different interactive protocols, after inserting the GB to CHAOJI charging interface, a specific signal is needed to facilitate BMS to identify whether the current interface protocol is CHAOJI. Based on the above requirements, a resistor Rz with a specific resistance value is added to the CC2 interface of the GB interface. The BMS of the GB vehicle can identify whether it needs to be executed according to the CHAOJI interface protocol by identifying the specific resistance value of the current CC2 interface (specific voltage of detection point 2). In addition, it can also be considered to connect resistors Rd and Rz in parallel, or introduce other series or parallel resistors to achieve the purpose of setting a specific resistance value; once the BMS recognizes that the CHAOJI adapter has been inserted through the resistance of the CC2 interface, the relay S2 in the GB interface circuit should be immediately switched from the closed state to the open state. During the charging process, the process of the GB vehicle BMS identifying the specific CC2 resistance value of the GB interface and the charging pile identifying the interface protocol of the GB vehicle through the CC1 interface are carried out simultaneously and always exist.

[0033] In summary, the embodiment of the utility model provides a GB to CHAOJI charging interface, which can make the GB vehicle compatible with the CHAOJI control guidance circuit on the basis of the original GB charging interface circuit by installing a conversion device between the CHAOJI interface corresponding to the CHAOJI charging pile and the GB interface corresponding to the GB vehicle. When the GB vehicle BMS recognizes the CC2 resistance value specific to the GB interface, the internal software protocol of the GB vehicle BMS switches from GB to CHAOJI, so that the GB vehicle is compatible with both GB and CHAOJI charging standards, thereby improving the user charging experience.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A national standard to CHAOJI charging interface, used to connect a CHAOJI charging pile and a national standard vehicle, characterized in that: It includes a CHAOJI interface corresponding to a CHAOJI charging pile, a national standard interface corresponding to a national standard vehicle, and a conversion device. The national standard interface is connected to the CHAOJI interface through the conversion device. The conversion device includes a DC+ line, a DC- line, a PE line, an S+ line, an S- line, and a detection component. One end of the DC+ line is connected to the DC+ line of the CHAOJI charging pile, and the other end of the DC+ line is connected to the DC+ line of the national standard vehicle. One end of the DC- line is connected to the DC- line of the CHAOJI charging pile, and the other end of the DC- line is connected to the DC- line of the national standard vehicle. One end of the PE line is connected to the PE line of the CHAOJI charging pile, and the other end of the PE line is connected to the national standard vehicle. The PE line of the national standard vehicle is connected, one end of the S+ line is connected to the S+ line of the CHAOJI charging pile, and the other end of the S+ line is connected to the S+ line of the national standard vehicle, one end of the S- line is connected to the S- line of the CHAOJI charging pile, and the other end of the S- line is connected to the S- line of the national standard vehicle. If the first end of the detection component is connected to the CC1 interface of the national standard vehicle, the second end of the detection component is connected to the CC1 interface of the CHAOJI charging pile. If the first end of the detection component is connected to the CC2 interface of the national standard vehicle, the second end of the detection component is connected to the PE line of the CHAOJI charging pile through the detection resistor (Rc) of the CHAOJI charging pile.

2. The national standard to CHAOJI charging interface as claimed in claim 1, characterized in that: The detection component is a single resistor, an equivalent resistor in which multiple resistors are connected in series or parallel, or a combination of a diode and a resistor.

3. The national standard to CHAOJI charging interface as claimed in claim 1, characterized in that: The detection component is used to identify the two charging standards, GB and CHAOJI, of the charging pile to which the national standard vehicle is connected.

4. The national standard to CHAOJI charging interface as claimed in claim 2, characterized in that: When the first end of the detection component is connected to the CC1 interface of the national standard vehicle, the detection component includes a diode (D1), a first resistor (Rx) and a second resistor (Ry), the positive electrode of the diode (D1) is connected to the CC1 interface of the CHAOJI charging pile, the negative electrode of the diode (D1) is connected to one end of the first resistor (Rx), the other end of the first resistor (Rx) is connected to the PE line, one end of the second resistor (Ry) is connected to the negative electrode of the diode (D1), and the other end of the second resistor (Ry) is connected to the CC1 interface of the national standard vehicle.

5. The national standard to CHAOJI charging interface as claimed in claim 2, characterized in that: When the first end of the detection component is connected to the CC1 interface of the national standard vehicle, the detection component includes a diode (D1), a first resistor (Rx), a second resistor (Ry) and a third resistor (Ri), the positive electrode of the diode (D1) is connected to the CC1 interface of the CHAOJI charging pile, the negative electrode of the diode (D1) is connected to one end of the first resistor (Rx), the other end of the first resistor (Rx) is connected to the PE line, one end of the second resistor (Ry) is connected to the negative electrode of the diode (D1), the other end of the second resistor (Ry) is connected to the CC1 interface of the national standard vehicle, one end of the third resistor (Ri) is connected to the negative electrode of the diode (D1), and the other end of the third resistor (Ri) is connected to the PE line.

6. The national standard to CHAOJI charging interface as claimed in claim 2, characterized in that: When the first end of the detection component is connected to the CC2 interface of the national standard vehicle, the detection component includes a fourth resistor (Rz), one end of the fourth resistor (Rz) is connected to the CHAOJI charging pile PE line through the detection resistor (Rc) of the CHAOJI charging pile, and the other end of the fourth resistor (Rz) is connected to the CC2 interface of the national standard vehicle.

7. The national standard to CHAOJI charging interface as claimed in claim 2, characterized in that: When the first end of the detection component is connected to the CC2 interface of the national standard vehicle, the detection component includes a fourth resistor (Rz) and a fifth resistor (Rd), one end of the fourth resistor (Rz) is connected to the CHAOJI charging pile PE line through the detection resistor (Rc) of the CHAOJI charging pile, and the other end of the fourth resistor (Rz) is connected to the CC2 interface of the national standard vehicle, one end of the fifth resistor (Rd) is connected to the CHAOJI charging pile PE line through the detection resistor (Rc) of the CHAOJI charging pile, and the other end of the fifth resistor (Rd) is connected to the PE line.

Images