An OBC wake-up test device

Abstract

This utility model discloses an OBC wake-up testing device, belonging to the field of new energy vehicle charging technology. It mainly includes: a device body and a connection terminal to the vehicle's OBC, connected by a plug-in cable. The device body includes a housing, a processor terminal, a power supply component, and a testing component. The processor terminal is fixed inside the housing, and a testing component is fixed to the housing on its adjacent side. The power supply component is fixedly connected to the housing and to the processor terminal and testing component via a cable. The testing component includes a CAN card, a low-voltage connector, and multiple cables, with some cables connecting the CAN card to the low-voltage connector and others connecting the power supply component to the low-voltage connector. This utility model has a simple structure, is easy to carry, and is low in cost. It can improve OBC inspection efficiency, reduce the labor intensity of quality inspectors, and increase the product pass rate. This utility model is mainly used for wake-up testing of vehicle-mounted OBCs.

Description

Technical Field

[0001] This utility model belongs to the field of new energy vehicle charging technology, and more specifically, it relates to an OBC wake-up test device. Background Technology

[0002] OBC, or On-Board Charger, is a key component of new energy vehicles. It is responsible for transmitting grid voltage to the on-board charger through ground AC charging piles and AC charging ports, thereby charging the electric vehicle battery.

[0003] With the continuous expansion of my country's new energy vehicle industry, the number of electric vehicle power supply devices is also showing a sustained growth trend. The market demand for on-board chargers (OBCs) is also increasing. The quality of the OBC is related to the overall product quality of the vehicle, and how to quickly perform quality testing on the OBC is crucial to the vehicle production cycle and overall vehicle quality. Whether an OBC can function properly depends on whether it can be properly woken up. There are four wake-up methods: KL15 wake-up, CC wake-up, CP wake-up, and network message wake-up. How to quickly perform wake-up detection is a problem that must be solved.

[0004] Currently, the common method for OBC testing by automotive OEMs is to conduct bench testing. This involves connecting all relevant electrical components in series using high and low voltage wiring harnesses to build a bench testing platform for OBC testing. While this method can fully test all functions of the OBC, it is inefficient, requires a large testing space, and is not suitable for quality testing of mass-produced products.

[0005] For example, the patent with publication number CN221678511U, entitled "CC Resistor Wake-up Trigger Circuit for OBC Charging Gun," has a single function and is not suitable for batch quality testing of products, nor does it meet the testing requirements of OBCs for new energy vehicles. Therefore, the OBC wake-up detection device needs to be improved. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an OBC wake-up test device. This device has a simple structure, is easy to carry, and is inexpensive. It can improve the efficiency of OBC inspection, reduce the labor intensity of quality inspectors, and improve the product qualification rate.

[0007] The OBC wake-up test device includes a main body and a vehicle OBC connection terminal, which are connected by a plug-in cable. The main body includes a housing, a processor terminal, a power supply component, and a test component. The processor terminal is fixed inside the housing, and a test component is fixed inside the housing on an adjacent side. The power supply component is fixedly connected to the inside of the housing, and is fixedly connected to the processor terminal and the test component by a cable. The test component includes a CAN card, a low-voltage connector, and multiple cables, with some cables used to connect the CAN card to the low-voltage connector and some cables used to connect the power supply component to the low-voltage connector. The low-voltage connector has connection terminals adapted to the vehicle OBC connection terminal, including CANH terminal, CANL terminal, CP terminal, CC terminal, KL30 terminal, KL15 terminal, and GND terminal.

[0008] Preferably, a first resistor and a first switch are provided in the middle of the line B.

[0009] Preferably, a second switch is provided in the middle of the line D.

[0010] Preferably, a second resistor and a third switch are provided in the middle of the line F.

[0011] Preferably, the power supply component includes a working power supply, a test power supply, and a charging dock. The working power supply and the test power supply are fixed inside the housing and are adjacent to the processor terminal and the test component. The charging dock is located on one side of the working power supply and is connected to the housing, and is also connected to the working power supply and the test power supply.

[0012] Preferably, the test power supply has a positive terminal and a negative terminal, wherein the positive terminal is connected to line B and line C; and the negative terminal is connected to line E.

[0013] Preferably, the surface of the housing is further fixed with an operation screen and a display screen, both of which are connected to the power supply and the processor terminal.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This device has a simple structure, is easy to carry, and has low cost. It can improve the efficiency of OBC inspection, reduce the labor intensity of quality inspectors, and increase the product qualification rate. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the cable connections in this utility model; Figure 4 This is a schematic diagram of the principle of this utility model; Figure 5 This is a charging guide diagram for this utility model.

[0016] In the diagram: 1. Housing; 11. Operation panel; 12. Display screen; 2. Processor terminal; 3. Power supply assembly; 31. Working power supply; 32. Test power supply; 321. Positive terminal; 322. Negative terminal; 33. Charging dock; 4. Test assembly; 5. CAN card; 6. Low-voltage connector; 60. Connection terminal; 61. CANH terminal; 62. CANL terminal; 63. CP terminal; 64. CC terminal; 65. KL30 terminal; 66. KL15 terminal; 67. GND terminal; 7. Cable; 71. Line A; 72. Line B; 721. First resistor; 722. First switch; 73. Line C; 74. Line D; 741. Second switch; 75. Line E; 76. Line F; 761. Second resistor; 762. Third switch. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] like Figures 1 to 4As shown, an OBC wake-up test device includes a main body and a vehicle OBC connection terminal, which are connected by a plug-in cable. The main body comprises a housing 1, a processor terminal 2, a power supply component 3, and a test component 4. The processor terminal 2 is fixed inside the housing 1, and the test component 4, fixed inside the housing 1, is located on an adjacent side therein. The power supply component 3 is fixedly connected to the inside of the housing 1, and is fixedly connected to the processor terminal 2 and the test component 4 via a cable. The test component 4 comprises a CAN card 5, a low-voltage connector 6, and multiple cables 7. Some cables 7 are used to connect the CAN card 5 to the low-voltage connector 6, and some cables 7 are used to connect the power supply component 3 to the low-voltage connector 6. The low-voltage connector 6 has connection terminals 60 adapted to the vehicle OBC connection terminal, including a CANH terminal 61, a CANL terminal 62, a CP terminal 63, a CC terminal 64, a KL30 terminal 65, a KL15 terminal 66, and a GND terminal 67. In this way, by integrating the processor terminal 2, power supply component 3, and testing component 4, and connecting them to the vehicle OBC connection terminal via a multi-port connection terminal 60, rapid wake-up of four OBC modes is achieved. Compared with traditional OBC wake-up methods, this application not only improves OBC inspection efficiency and reduces the workload of quality inspectors, but also increases the product pass rate. Furthermore, this application is small in size, has a simple overall structure, and is easy to carry and maintain.

[0019] Optionally, an operation screen 11 and a display screen 12 are also fixed to the surface of the housing 1, and both are connected to the power supply 31 and the processor terminal 2. In this way, by using the operation screen 11 and the display screen 12 together, not only can relevant test parameters be set, but test data can also be displayed intuitively.

[0020] like Figure 2 As shown, the power supply component 3 includes a working power supply 31, a test power supply 32, and a charging dock 33. The working power supply 31 and the test power supply 32 are fixed inside the housing 1 and are adjacent to the processor terminal 2 and the test component 4. The charging dock 33 is located on one side of the working power supply 31, communicates with the housing, and is connected to both the working power supply 31 and the test power supply 32. Thus, the power supply component 3 divides the power supply into a working power supply 31 and a test power supply 32. The working power supply 31 primarily provides power to the processor terminal 2 to ensure a stable current and voltage, preventing damage from current and voltage fluctuations and ensuring stable operation. The test power supply 32 primarily provides power to the test component 4, which requires a large instantaneous current and voltage during operation. Therefore, the working power supply 31 and the test power supply 32 must be set up separately to ensure the stable operation of the overall equipment.

[0021] Optionally, the test power supply 32 has a positive terminal 321 and a negative terminal 322, namely "+" and "-", and provides a 12V voltage.

[0022] like Figures 2 to 5 As shown, cable 7 includes lines A71, B72, C73, D74, E75, and F76. Line A71 connects the GAN card to the CANH terminal 61 and CANL terminal 62 of the low-voltage connector 6; line B72 connects the power supply component 3 to the CP terminal 63 of the low-voltage connector 6; line C73 connects line B72 to the KL30 terminal 65 of the low-voltage connector 6; line D74 connects the power supply component 3 to the KL15 terminal 66 of the low-voltage connector 6; line E75 connects the power supply component 3 to the GND terminal 67 of the low-voltage connector 6; and line F76 connects line E75 to the CC terminal 64 of the low-voltage connector 6. This multi-line connection enables independent connection of multiple wake-up terminals, allowing selection based on actual needs during operation and improving the applicability of the equipment.

[0023] For example, the processor terminal 2 transmits the wake-up message to the low-voltage connector 6 via CANH and CANL signals through the CAN card 5 via line A71, and then transmits it to the vehicle OBC connection terminal through the low-voltage connector 6 to realize network wake-up test.

[0024] like Figures 2 to 5 As shown, a first resistor 721 and a first switch 722 are provided in the middle of the circuit B72. Thus, the first resistor 721 and the first switch 722 are connected to the test power supply 32 12V+ through the circuit B72. After closing the first switch 722, the voltage of the test power supply 32 12V+ can be divided by the first resistor 721 and then transmitted to the vehicle OBC connection terminal through the low-voltage connector 6 to achieve the wake-up test of the CP terminal 63.

[0025] Optionally, terminal 65 of KL30 is normally powered and is connected to the test power supply 32 via line C73.

[0026] like Figures 2 to 5 As shown, a second switch 741 is provided in the middle of the line D74. In this way, the second switch 741 is connected to the test power supply 32 12V+ through the line D74. After the second switch 741 is closed, a 12V wake-up voltage is transmitted to the vehicle OBC connection terminal through the low-voltage connector 6 to realize the wake-up test of the KL15 terminal 66.

[0027] Optionally, the GND terminal 67 is a normal ground and is connected to the test power supply 32 via line E75.

[0028] like Figures 2 to 5As shown, a second resistor 761 and a third switch 762 are provided in the middle of the circuit F76. Thus, the second resistor 761 and the third switch 762 are connected to the test power supply 32 12V- through the circuit F76. After closing the third switch 762, a 680Ω wake-up resistor is transmitted to the vehicle OBC connection terminal through the low-voltage connector 6, realizing the wake-up test of the CC terminal 64.

[0029] For example, to make the accompanying drawings more concise, some component names are simplified, such as: the first resistor is simplified to R1, the second resistor to R2, the first switch to K1, the second switch to K2, and the third switch to K3.

[0030] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An OBC wake-up test device, comprising a device main body and a vehicle OBC connection end, and the two are connected through a plug-in line, characterized in that: The main body of the device includes a housing (1), a processor terminal (2), a power supply component (3), and a test component (4). The processor terminal (2) is fixed inside the housing (1), and a test component (4) is provided on its adjacent side and fixed inside the housing (1). The power supply component (3) is fixedly connected to the inside of the housing (1), and the power supply component (3) is fixedly connected to the processor terminal (2) and the test component (4) through cables. The test component (4) consists of a CAN card (5), a low-voltage connector (6), and multiple cables (7). Some cables (7) are used to connect the CAN card (5) and the low-voltage connector (6), and some cables (7) are used to connect the power supply component (3) and the low-voltage connector (6). The low-voltage connector (6) is provided with a connection terminal (60) adapted to the vehicle OBC connection terminal, including a CANH terminal (61), a CANL terminal (62), a CP terminal (63), a CC terminal (64), a KL30 terminal (65), a KL15 terminal (66), and a GND terminal (67).

2. The OBC wake-up test device according to claim 1, characterized in that: The cable (7) includes line A (71), line B (72), line C (73), line D (74), line E (75), and line F (76). Line A (71) is used to connect the CAN card to the CANH terminal (61) and CANL terminal (62) of the low-voltage connector (6). Line B (72) is used to connect the power supply component (3) to the CP terminal (63) of the low-voltage connector (6). Line C (73) is used to connect line B (72) to the KL30 terminal (65) of the low-voltage connector (6). Line D (74) is used to connect the power supply component (3) to the KL15 terminal (66) of the low-voltage connector (6). Line E (75) is used to connect the power supply component (3) to the GND terminal (67) of the low-voltage connector (6). Line F (76) is used to connect line E (75) to the CC terminal (64) of the low-voltage connector (6).

3. The OBC wake-up test device according to claim 2, characterized in that: The middle part of line B (72) is provided with a first resistor (721) and a first switch (722).

4. The OBC wake-up test device according to claim 2, characterized in that: A second switch (741) is provided in the middle of the line D (74).

5. The OBC wake-up test device according to claim 2, characterized in that: The middle part of the line F (76) is provided with a second resistor (761) and a third switch (762).

6. The OBC wake-up test device according to claim 1, characterized in that: The power supply component (3) includes a working power supply (31), a test power supply (32), and a charging dock (33). The working power supply (31) and the test power supply (32) are fixed inside the housing (1) and are adjacent to the processor terminal (2) and the test component (4). The charging dock (33) is located on one side of the working power supply (31) and is connected to the housing (1), and is also connected to the working power supply (31) and the test power supply (32).

7. The OBC wake-up test device according to claim 6, characterized in that: The test power supply (32) has a positive terminal (321) and a negative terminal (322), wherein the positive terminal (321) is connected to line B (72) and line C (73); and the negative terminal (322) is connected to line E (75).

8. The OBC wake-up test device according to claim 1, characterized in that: The surface of the housing (1) is also fixed with an operation screen (11) and a display screen (12), both of which are connected to the power supply (31) and the processor terminal (2).

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