CN220105189U - Interface testing device and automobile - Google Patents
Interface testing device and automobile Download PDFInfo
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- CN220105189U CN220105189U CN202320953005.0U CN202320953005U CN220105189U CN 220105189 U CN220105189 U CN 220105189U CN 202320953005 U CN202320953005 U CN 202320953005U CN 220105189 U CN220105189 U CN 220105189U
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- 238000012360 testing method Methods 0.000 title claims abstract description 58
- 239000003990 capacitor Substances 0.000 claims abstract description 63
- 238000012544 monitoring process Methods 0.000 claims abstract description 42
- 238000007599 discharging Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model provides an interface testing device. The interface testing device comprises a power supply, a discharge capacitor, a first switch and a second switch; the first port of the power supply is connected with the first port of the first switch, the second port of the first switch is connected with the first port of the discharge capacitor and the first port of the second switch, and the second port of the second switch is connected with the first port of the interface circuit; the second port of the power supply is connected with the second port of the discharge capacitor and the second port of the interface circuit; the interface testing device is provided with a first monitoring point and a second monitoring point, the first monitoring point is connected with a first port of the discharge capacitor, and the second monitoring point is connected with a second port of the second switch. The interface testing device can be used for detecting the protection capability of an interface circuit of the automobile on high-voltage pulse signals generated on the fast filling pile and the slow filling pile. The utility model also provides an automobile comprising the interface testing device.
Description
Technical Field
The present utility model relates to the field of electronic circuits, and in particular, to an interface testing device and an automobile.
Background
In order to greatly reduce the carbon dioxide emission of automobiles, the automobile industry is invested in a great deal of manpower and material resources to develop novel automobiles using electricity as a power source, such as hybrid automobiles and electric automobiles. In a new type of automobile, the safety of the charging function of the automobile is an important safety index.
In order to ensure the safety of the automobile charging function, the protection capability of the fast charging and slow charging interfaces of the controller on the high-voltage pulse signals generated on the fast charging pile and the slow charging pile needs to be verified. The existing test method is to output specified test pulses through a pulse generator or a programmable power supply and other devices to detect the fast charge and slow charge interface circuits. But the pulse generator is bulky and expensive; the programmable power supply is insufficient in instantaneous release power and cannot equivalently output high-voltage pulse signals possibly generated on an actual fast filling pile and a slow filling pile.
Disclosure of Invention
The utility model aims to provide an interface testing device which can generate an equivalent high-voltage pulse signal, can test an interface circuit by utilizing the generated equivalent high-voltage pulse signal so as to verify the protection capability of the interface circuit on the high-voltage pulse signal generated on a fast charging pile and a slow charging pile and ensure the charging safety of an automobile. The utility model also provides an automobile comprising the interface testing device.
In order to achieve the above object, an aspect of the present utility model provides an interface testing apparatus. The interface testing device is used for detecting the protection capability of an interface circuit of the automobile on high-voltage pulse signals generated on the fast charging pile and the slow charging pile, and comprises a power supply, a discharging capacitor, a first switch and a second switch; the first port of the power supply is connected with the first port of the first switch, the second port of the first switch is connected with the first port of the discharge capacitor and the first port of the second switch, and the second port of the second switch is connected with the first port of the interface circuit; the second port of the power supply is connected with the second port of the discharge capacitor and the second port of the interface circuit; the interface testing device is provided with a first monitoring point and a second monitoring point, the first monitoring point is connected with the first port of the discharge capacitor, and the second monitoring point is connected with the second port of the second switch.
Optionally, the interface testing device further includes a discharging resistor, the discharging resistor is disposed between the first switch and the second switch, one end of the discharging resistor is connected with the second port of the first switch, and the other end of the discharging resistor is connected with the first port of the second switch.
Optionally, the resistance value c of the discharge capacitor satisfies the formula:wherein t is the closing time of the second switch, R is the resistance value of the discharge resistor, ut is the voltage of the discharge capacitor when the second switch is opened, u0 is the voltage of the discharge capacitor when the second switch starts to be closed, and un is the voltage after the discharge of the discharge capacitor is completed.
Optionally, the interface testing device further comprises a connector; the connector connects the first port of the interface circuit and the second port of the second switch.
Optionally, the second port of the discharge capacitor, the second port of the power supply, and the second port of the interface circuit are all grounded.
Optionally, the first monitoring point is a capacitor voltage monitoring point, and the second monitoring point is a ground impedance monitoring point.
Optionally, the power supply is a voltage-adjustable power supply.
Optionally, the first switch and the second switch each comprise a high voltage relay.
In another aspect, the utility model also provides an automobile. The automobile comprises an interface circuit and an interface testing device for testing the interface circuit.
In the interface testing device and the automobile provided by the utility model, the interface testing device comprises a power supply, a discharge capacitor, a first switch and a second switch; the first port of the power supply is connected with the first port of the first switch, the second port of the first switch is connected with the first port of the discharge capacitor and the first port of the second switch, and the second port of the second switch is connected with the first port of the interface circuit; the second port of the power supply is connected with the second port of the discharge capacitor and the second port of the interface circuit; the interface testing device is provided with a first monitoring point and a second monitoring point, the first monitoring point is connected with the first port of the discharge capacitor, the second monitoring point is connected with the second port of the second switch, so that an equivalent high-voltage pulse signal can be generated in the charging and discharging process of the discharge capacitor of the interface testing device, the interface circuit can be tested by utilizing the generated equivalent high-voltage pulse signal, the protection capability of the interface circuit on the high-voltage pulse signal generated on the fast charging pile and the slow charging pile is verified, the automobile charging safety is guaranteed, the application scene of the interface testing device is wide, the signal configuration is flexible, the instantaneous power is not limited, and the cost is low.
Drawings
Fig. 1 is a schematic diagram of an interface testing apparatus according to an embodiment of the utility model.
Detailed Description
The interface test device and the automobile provided by the utility model are further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present utility model will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.
The terms "first", "second" as used in the present utility model are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or at least two such feature. The terms "one end" and "the other end" generally refer to the corresponding two parts, which include not only the endpoints. The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements.
Fig. 1 is a schematic diagram of an interface testing apparatus according to an embodiment of the utility model. Referring to fig. 1, the interface testing device 10 provided in this embodiment includes a power supply, a discharging capacitor C1, a first switch S1 and a second switch S2, and is configured to detect a protection capability of an interface circuit of an automobile on a high-voltage pulse signal generated on a fast charging pile and a slow charging pile. In this embodiment, reference is made to fig. 1. The interface circuit is a fast charge and slow charge interface circuit.
Specifically, a first port of the power supply is connected with a first port of the first switch S1, a second port of the first switch S1 is connected with a first port of the discharge capacitor C1 and is connected with a first port of the second switch S2, and a second port of the second switch S2 is connected with a first port of the interface circuit; the second port of the power supply is connected with the second port of the discharge capacitor C1 and is connected with the second port of the interface circuit; the interface testing device is provided with a first monitoring point and a second monitoring point, the first monitoring point is connected with the first port of the discharging capacitor C1, and the second monitoring point is connected with the second port of the second switch.
Illustratively, the second port of the discharge capacitor C1, the second port of the power supply, and the second port of the interface circuit may all be grounded.
In this embodiment, the power supply is a voltage-adjustable power supply, so that the power supply is convenient to provide a voltage meeting the requirement, but is not limited thereto. The first switch S1 and the second switch S2 may each include a device with a smaller capacitance, such as a high-voltage relay, so that the discharging capacitor C1 can generate an equivalent high-voltage pulse signal meeting the requirement in the charging and discharging process. It should be noted that, the first switch S1 and the second switch S2 may not use a device with a larger capacitance such as a programmable switch.
In this embodiment, when the first switch S1 is closed and the second switch S2 is opened, the power supply charges the discharge capacitor C1; when the voltage of the discharging capacitor C1 reaches the target voltage value, the first switch S1 is turned off, and after the first switch S1 is turned off, the second switch S2 is turned on, and the discharging capacitor C1 discharges the interface circuit. The equivalent high-voltage pulse signal can be generated in the charging and discharging process of the discharging capacitor C1 of the interface test device 10, and the interface circuit can be tested by using the equivalent high-voltage pulse signal.
Illustratively, the second switch S2 is closed within 0.5S after the first switch S1 is opened, but is not limited thereto. The voltage value at which the discharge capacitor C1 starts to discharge is greater than or equal to the target voltage value so that the interface test device 10 can test the capability of the interface circuit to protect the specified high-voltage pulse signal. The target voltage value and the specified high-voltage pulse signal may be set according to the actual situation of the interface circuit, or the target voltage value and the specified high-voltage pulse signal may be set according to the requirement of the user.
Referring to fig. 1, the interface test device 10 further includes a discharge resistor R1, where the discharge resistor R1 is disposed between the first switch S1 and the second switch S2, one end of the discharge resistor R1 is connected to the second port of the first switch S1, and the other end of the discharge resistor R1 is connected to the first port of the second switch S2.
In this embodiment, the resistance value C of the discharge capacitor C1 satisfies the formula 1:where t is the closing time of the second switch S2, R is the resistance of the discharge resistor R1, ut is the voltage of the discharge capacitor C1 when the second switch S2 is opened, u0 is the voltage of the discharge capacitor C1 when the second switch S2 starts to be closed, and un is the voltage after the discharge of the discharge capacitor C1 is completed.
In this embodiment, a discharge resistor R1 is disposed between the first switch S1 and the second switch S2, and the designated high-voltage pulse signal generated by the interface test device 10 can be flexibly configured by adjusting the initial set voltage value of the power supply, the capacitance value of the discharge capacitor C1, and/or the resistance value of the discharge resistor R1.
Referring to fig. 1, the interface test device includes a connector that can connect the first port of the interface circuit and the second port of the second switch S2, thus facilitating the electrical connection of the interface circuit with the interface test device 10 and the disconnection of the electrical connection between the interface circuit and the interface test device 10.
Referring to fig. 1, in this embodiment, the first monitoring point may be a capacitor voltage monitoring point, and the second monitoring point may be a ground impedance monitoring point.
Referring to fig. 1, the step of the interface test device 10 testing the capability of the fast-charge and slow-charge interface circuits to protect the specified high-voltage pulse signals includes:
s101, setting a voltage value of a power supply and a resistance value of a discharge resistor R1 according to a specified high-voltage pulse signal, and determining a capacitance value of a discharge capacitor C1 through a formula 1;
s102, closing a first switch S1, and opening a second switch S2, wherein the power supply charges a discharge capacitor C1;
s103, after the voltage of the discharge capacitor C1 reaches a target voltage value, the first switch S1 is turned off, and the discharge capacitor C1 stops charging;
s104, closing a second switch S2 within 0.5S after the first switch S1 is opened, and discharging a fast charge interface circuit and a slow charge interface circuit by using a discharge capacitor C1, wherein the voltage value of the discharge capacitor C1 is not lower than a target voltage value at the beginning of discharging;
s105, detecting the voltage value of the capacitor voltage monitoring point and the impedance of the capacitor voltage monitoring point to the ground impedance, and if the voltage of the capacitor voltage monitoring point is in a set range and the impedance of the capacitor voltage monitoring point to the ground impedance is in the set range, indicating that the fast charge and slow charge interface circuit has the capability of protecting the appointed high-voltage pulse signal; if the voltage of the capacitor voltage monitoring point exceeds the set range and/or the impedance of the capacitor voltage monitoring point exceeds the set range, the fast charging and slow charging interface circuit is not capable of protecting the specified high-voltage pulse signals.
The interface testing device 10 provided in this embodiment includes a power supply, a discharge capacitor C1, a first switch S1 and a second switch S2; the first port of the power supply is connected with the first port of the first switch S1, the second port of the first switch S1 is connected with the first port of the discharge capacitor C1 and the first port of the second switch S2, and the second port of the second switch S2 is connected with the first port of the interface circuit; the second port of the power supply is connected with the second port of the discharge capacitor C1 and is connected with the second port of the interface circuit; the interface testing device is provided with a first monitoring point and a second monitoring point, the first monitoring point is connected with a first port of the discharging capacitor C1, the second monitoring point is connected with a second port of the second switch S2, so that an equivalent high-voltage pulse signal can be generated in the charging and discharging process of the discharging capacitor C1 of the interface testing device, the interface circuit can be tested by utilizing the generated equivalent high-voltage pulse signal, the protection capability of the interface circuit on the high-voltage pulse signal generated on the fast charging pile and the slow charging pile is verified, the automobile charging safety is guaranteed, the application scene of the interface testing device is wide, the signal configuration is flexible, the instantaneous power is not limited, and the cost is low.
The embodiment also provides an automobile, which comprises an interface circuit and an interface testing device for testing the interface circuit.
It should be noted that, the present specification is described in a progressive manner, and the differences between the interface test device described above and the vehicle described below are mainly described in the following description, and the same and similar parts are referred to each other.
The foregoing description is only illustrative of the preferred embodiments of the present utility model, and is not intended to limit the scope of the claims, and any person skilled in the art may make any possible variations and modifications to the technical solution of the present utility model using the method and technical content disclosed above without departing from the spirit and scope of the utility model, so any simple modification, equivalent variation and modification made to the above embodiments according to the technical matter of the present utility model fall within the scope of the technical solution of the present utility model.
Claims (9)
1. The interface testing device is characterized by being used for detecting the protection capability of an interface circuit of an automobile on high-voltage pulse signals generated on a fast charging pile and a slow charging pile, and comprising a power supply, a discharging capacitor, a first switch and a second switch; the first port of the power supply is connected with the first port of the first switch, the second port of the first switch is connected with the first port of the discharge capacitor and the first port of the second switch, and the second port of the second switch is connected with the first port of the interface circuit; the second port of the power supply is connected with the second port of the discharge capacitor and the second port of the interface circuit; the interface testing device is provided with a first monitoring point and a second monitoring point, the first monitoring point is connected with the first port of the discharge capacitor, and the second monitoring point is connected with the second port of the second switch.
2. The interface testing device of claim 1, further comprising a discharge resistor disposed between the first switch and the second switch, one end of the discharge resistor being connected to the second port of the first switch, the other end of the discharge resistor being connected to the first port of the second switch.
3. The interface testing device of claim 2, wherein the resistance value c of the discharge capacitor satisfies the formula:wherein t is the closing time of the second switch, R is the resistance value of the discharge resistor, ut is the voltage of the discharge capacitor when the second switch is opened, u0 is the voltage of the discharge capacitor when the second switch starts to be closed, and un is the voltage after the discharge of the discharge capacitor is completed.
4. The interface testing device of claim 1, wherein the interface testing device further comprises a connector; the connector connects the first port of the interface circuit and the second port of the second switch.
5. The interface test apparatus of claim 1, wherein the second port of the discharge capacitor, the second port of the power supply, and the second port of the interface circuit are all grounded.
6. The interface testing device of claim 1, wherein the first monitoring point is a capacitor voltage monitoring point and the second monitoring point is a ground impedance monitoring point.
7. The interface testing device of claim 1, wherein the power source is a voltage-adjustable power source.
8. The interface testing apparatus of claim 1, wherein the first switch and the second switch each comprise a high voltage relay.
9. An automobile comprising an interface circuit and an interface test device according to any one of claims 1 to 8 for testing the interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320953005.0U CN220105189U (en) | 2023-04-24 | 2023-04-24 | Interface testing device and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320953005.0U CN220105189U (en) | 2023-04-24 | 2023-04-24 | Interface testing device and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220105189U true CN220105189U (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320953005.0U Active CN220105189U (en) | 2023-04-24 | 2023-04-24 | Interface testing device and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220105189U (en) |
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2023
- 2023-04-24 CN CN202320953005.0U patent/CN220105189U/en active Active
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