CN-224231863-U - Phase failure test fixture

CN224231863UCN 224231863 UCN224231863 UCN 224231863UCN-224231863-U

Abstract

The application relates to the technical field of electric automobile performance detection, and discloses a phase-failure testing tool which is used for being arranged between a charging port at the whole automobile end of a vehicle and an electric control integrated assembly so as to perform phase-failure testing of the electric control integrated assembly, and comprises a shell; the control chip module is arranged in the shell, the first high-voltage plug-in female module is arranged in the shell, the first high-voltage plug-in male module is arranged in the shell and is communicated with the first high-voltage plug-in female module, the relay module is arranged in the shell and is positioned on a circuit between the first high-voltage plug-in female module and the first high-voltage plug-in male module, and the relay module is used for controlling the circuit of the first high-voltage plug-in female module and the circuit of the first high-voltage plug-in male module to be disconnected through the control chip module. Through the mode, the problem of working condition distortion in the traditional bench test can be solved, and meanwhile, the actual charging pile is not required to be damaged or a high-cost three-phase power supply simulation system is not required to be built.

Inventors

XU SISHI
ZHANG CHAO
ZHANG ZHENGMING
HUA XIANWEI

Assignees

浙江凌骁能源科技有限公司
浙江零跑科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250527

Claims (10)

1. The utility model provides a phase-failure test fixture which characterized in that is used for installing between whole car end charge mouth and automatically controlled integrated assembly of vehicle to carry out the phase-failure test of automatically controlled integrated assembly, phase-failure test fixture includes: A housing (10); A control chip module (20) arranged in the housing (10); the first high-voltage plug-in female head module (30) is arranged on the shell (10); The first high-voltage plug-in male module (31) is arranged on the shell (10) and is communicated with the first high-voltage plug-in female module (30); The relay module is arranged on the shell (10) and is positioned on a circuit between the first high-voltage plug-in female module (30) and the first high-voltage plug-in male module (31), and the relay module controls the circuit between the first high-voltage plug-in female module (30) and the first high-voltage plug-in male module (31) to be disconnected through the control chip module (20); A first low-voltage communication female module (40) arranged on the housing (10); The first low-voltage communication male head module (41) is arranged on the shell (10) and is in signal connection with the first low-voltage communication female head module (40).
2. The open-phase test fixture according to claim 1, further comprising a control module (50), wherein the control module (50) is disposed on the housing (10) and is electrically connected to the control chip module (20), and the control chip module (20) is capable of receiving a signal from the control module (50) to control the relay module to be disconnected.
3. The open-phase test fixture according to claim 2, wherein four lines are provided between the first high-voltage plug-in female module (30) and the first high-voltage plug-in male module (31), and the relay module comprises a first relay (601), a second relay (602), a third relay (603) and a fourth relay (604) respectively arranged on the four lines.
4. A phase failure testing tool according to claim 3, wherein the control module (50) is a touch display screen, the touch display screen comprising: a first touch area (501) in signal connection with the first relay (601) to control the first relay (601) to be turned off; A second touch area (502) in signal connection with the second relay (602) to control the second relay (602) to be turned off; a third touch area (503) in signal connection with the third relay (603) to control the third relay (603) to be turned off; and the fourth touch control area (504) is in signal connection with the fourth relay (604) so as to control the fourth relay (604) to be disconnected.
5. The open-phase test fixture of claim 4, wherein the touch display screen further comprises: A fifth touch area (505), where the fifth touch area (505) is configured to confirm selection of a corresponding area when at least one of the first touch area (501), the second touch area (502), the third touch area (503), and the fourth touch area (504) is clicked, so that the control chip module (20) controls the relay on the corresponding line to be disconnected; And the sixth touch control area (506), wherein the sixth touch control area (506) is used for enabling the control chip module (20) to control the relay on the corresponding line to be closed after the test is completed so as to recover the four lines between the first high-voltage plug-in female module (30) and the first high-voltage plug-in male module (31) to be conducted again.
6. A phase failure testing tool according to claim 3, wherein a freewheeling diode (701) and/or a filter capacitor (702) are/is arranged between the control chip module (20) and the first relay (601), the second relay (602), the third relay (603) and the fourth relay (604) respectively.
7. The open-phase test fixture according to claim 1, wherein at least eight signal lines are arranged between the first low-voltage communication female head module (40) and the first low-voltage communication male head module (41), and a CAN signal serial port module (801) is arranged between the two signal lines and is used for receiving messages of the whole electric automobile and the high-voltage control integration assembly end.
8. The open-phase test fixture of claim 7, further comprising: a first detection channel (901) connected to a signal line for detecting a charge connection confirmation signal, and/or, A second detection channel (902) connected to a signal line for detecting a charging power confirmation signal, and/or, A third detection channel (903) connected to a signal line for detecting a DCDC hard-line wake-up input signal, and/or, A fourth detection channel (904) connected to a signal line for detecting a low voltage harness connection confirmation signal, and/or, A fifth detection channel (905) connected with a signal line for detecting the wake-up output signal of the vehicle-mounted charger and/or, And a sixth detection channel (906) connected to a signal line for grounding.
9. The open-phase test fixture according to claim 7, further comprising a power connection channel for powering the open-phase test fixture, the power connection channel comprising a positive channel (907) and a negative channel (908).
10. The open-phase test fixture according to claim 1, wherein the vehicle-end charging port is provided with a second high-voltage plug-in male module and a second low-voltage communication male module, the second high-voltage plug-in male module is connected with the first high-voltage plug-in female module (30), the second low-voltage communication male module is connected with the first low-voltage communication female module (40), and/or, The electric control integrated assembly is provided with a second high-voltage plug-in female head module and a second low-voltage communication female head module, the second high-voltage plug-in female head module is connected with the first high-voltage plug-in male head module (31), and the second low-voltage communication female head module is connected with the first low-voltage communication male head module (41).

Description

Phase failure test fixture Technical Field The application relates to the technical field of electric automobile performance detection, in particular to a phase-failure testing tool. Background With the rapid development of the global new energy automobile industry, the requirements on the safety and reliability of a charging system of an electric automobile are increasingly improved, and as one of the core components of the electric automobile, a high-voltage electric integrated assembly, namely CDU (Conversion & Distribution Unit), is used for bearing the energy interaction control function between a battery system and external charging equipment, and the performance of the energy interaction control function directly influences the charging efficiency of the whole automobile, the service life of the battery and the system safety. However, in the actual operation of the CDU, the stable input of the three-phase alternating current of the power grid is a key premise for ensuring normal charging, and if a phase-failure fault (i.e. at least one of the three phases is abnormal or missing), the device may be damaged due to overload, local overheating or charging interruption, etc. The current CDU open-phase test of the electric automobile can adopt a laboratory bench test system, test equipment modified by a charging pile and the like. The laboratory bench test system mainly adopts a high-precision power simulator to construct a three-phase alternating current input environment, simulates a phase failure through software programming, adopts an integrated data card to monitor CDU response parameters in real time, is generally used in a development stage of CDU, uses controllable test parameters, supports repeatability test under complex working conditions, but cannot simulate composite stress such as vibration, temperature change and electromagnetic interference of the whole vehicle, namely cannot simulate real working conditions of the phase failure test of the whole vehicle; the test equipment for the transformation of the charging pile is characterized in that the actual charging pile is used for carrying out hardware transformation, a phase of power supply is forcibly disconnected through a relay or a switch, the output characteristic of the CDU is monitored in real time through an external sensor, the transformation type equipment is generally used for after-sales fault reproduction, the equipment is based on high-voltage box operation, a real charging pile interface is directly utilized, physical compatibility is high, the actual charging pile is required to be transformed, cost is high, phase-failure operation is carried out frequently, aging of charging pile components can be accelerated, the transformation of the charging pile depends on the current charging pile, and the equipment is not portable. Disclosure of utility model The application provides a phase-failure testing tool, which can solve the problem of working condition distortion in the traditional bench test, and meanwhile, does not need to damage an actual charging pile or build a high-cost three-phase power supply simulation system. The application provides a phase-failure testing tool, which is used for being arranged between a charging port of a whole vehicle end of a vehicle and an electric control integrated assembly to perform phase-failure testing of the electric control integrated assembly, and comprises the following components: A housing; the control chip module is arranged in the shell; the first high-voltage plug-in female head module is arranged on the shell; the first high-voltage plug-in male module is arranged on the shell and is communicated with the first high-voltage plug-in female module; The relay module is arranged on the shell and is positioned on a circuit between the first high-voltage plug-in female head module and the first high-voltage plug-in male head module, and the relay module controls the circuit between the first high-voltage plug-in female head module and the first high-voltage plug-in male head module to be disconnected through the control chip module; the first low-voltage communication mother head module is arranged on the shell; the first low-voltage communication male head module is arranged on the shell and is in signal connection with the first low-voltage communication female head module. In an embodiment of the application, the open-phase testing tool further includes a control module, where the control module is disposed on the housing and is electrically connected to the control chip module, and the control chip module can receive a signal from the control module to control the relay module to be disconnected. In an embodiment of the present application, four lines are provided between the first high-voltage plug-in female module and the first high-voltage plug-in male module, and the relay module includes a first relay, a second relay, a third relay, and a fourth relay respectively disposed on t