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CN-116240709-B - Self-checking method, device and equipment of generator and vehicle

CN116240709BCN 116240709 BCN116240709 BCN 116240709BCN-116240709-B

Abstract

The embodiment of the application discloses a self-checking method, device and equipment of a generator and a vehicle, wherein the self-checking method, device and equipment of the generator acquire the state of a vehicle door and trigger the relay of a vehicle to be closed when the state of the vehicle door is a preset door state, and the vehicle three-electricity comprises a direct-current converter, a vehicle-mounted battery and a belt-driven starter generator. And acquiring the power-on state of the belt-driven starter generator, and triggering the vehicle-mounted battery to precharge the high-voltage end of the direct-current converter. And then when the power-on state of the belt-driven starter generator is a preset power-on state and the high-voltage end of the direct-current converter is pre-charged to a first preset voltage, the trigger motor utilizes the high-voltage end of the direct-current converter to carry out self-test on the high-voltage end and self-test on the low-voltage end. According to the application, the self-checking time of the low-voltage end of the generator is changed, and after the high-voltage end of the DC converter is pre-charged to the first preset voltage, the high-voltage end of the DC converter is used for supplying power to the low-voltage end, so that the stability of the 12-volt power supply voltage in the self-checking process of the low-voltage end is ensured, and the success rate of the self-checking of the generator is improved.

Inventors

  • YAN ZHUANGZHUANG

Assignees

  • 长城汽车股份有限公司

Dates

Publication Date
20260505
Application Date
20230113

Claims (10)

  1. 1. A method of self-test of a generator, the method comprising: Acquiring a vehicle door state; Responding to the vehicle door state being a preset door state, triggering a relay of a vehicle three-electricity to be closed, wherein the vehicle three-electricity comprises a direct current converter, a vehicle-mounted battery and a belt-driven starter generator; acquiring the power-on state of the belt-driven starter generator, and triggering the vehicle-mounted battery to precharge the high-voltage end of the direct-current converter; And responding to the power-on state of the belt-driven starter generator to be a preset power-on state, and the high-voltage end of the direct-current converter is pre-charged to a first preset voltage, triggering the belt-driven starter generator to perform high-voltage end self-test and low-voltage end self-test by using the high-voltage end of the direct-current converter.
  2. 2. The method according to claim 1, wherein the method further comprises: And responding to the success of the high-voltage end self-test and the low-voltage end self-test of the belt-driven starter generator, and triggering the belt-driven starter generator to enter a standby state.
  3. 3. The method according to claim 1, wherein the method further comprises: The method comprises the steps of responding to the success of self-checking at a high voltage end and the failure of self-checking at a low voltage end of the belt driven starting generator, and identifying diagnosis time and an internal voltage set value, wherein the diagnosis time is the time for diagnosing a circuit to be checked, voltage to be checked or any part to be checked of the belt driven starting generator; responsive to the diagnostic time being less than a preset time, increasing the diagnostic time to the preset time; and in response to the internal voltage set point being greater than a second preset voltage, reducing the internal voltage set point to the second preset voltage.
  4. 4. A method according to claim 3, characterized in that the method further comprises: and triggering the belt-driven starter generator to perform low-voltage end self-test again after the diagnosis time reaches a preset time and/or the internal voltage set value reaches a second preset voltage.
  5. 5. The method according to claim 4, wherein the method further comprises: and in response to the failure of the low-voltage end self-test of the belt-driven starter generator, the belt-driven starter generator fault lamp is lightened.
  6. 6. The method according to claim 1, wherein the method further comprises: and responding to failure of the self-checking of the high voltage end of the belt-driven starter generator, and lighting the fault lamp of the belt-driven starter generator.
  7. 7. A self-test device for an electrical generator, the device comprising: a first acquisition unit configured to acquire a vehicle door state; the first triggering unit is used for triggering the relay of the vehicle three electricity to be closed in response to the vehicle door state being a preset door state, wherein the vehicle three electricity comprises a direct current converter, a vehicle-mounted battery and a belt-driven starter generator; The second acquisition unit is used for acquiring the power-on state of the belt-driven starter generator; The pre-charging unit is used for pre-charging the high-voltage end of the direct-current converter; and the second triggering unit is used for triggering the belt-driven starter generator to perform high-voltage end self-test and low-voltage end self-test by utilizing the high-voltage end of the direct-current converter in response to the fact that the power-on state of the belt-driven starter generator is a preset power-on state and the high-voltage end of the direct-current converter is pre-charged to a first preset voltage.
  8. 8. The apparatus of claim 7, wherein the apparatus further comprises: And the third triggering unit is used for responding to the success of the self-checking of the high-voltage end and the self-checking of the low-voltage end of the belt-driven starter generator and triggering the belt-driven starter generator to enter a standby state.
  9. 9. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the self-test method of the generator of any one of claims 1-6 when the computer program is executed by the processor.
  10. 10. A vehicle, characterized in that it comprises a control module for performing a self-test method of the generator according to any one of claims 1-6.

Description

Self-checking method, device and equipment of generator and vehicle Technical Field The application relates to the field of self-inspection of generators, in particular to a self-inspection method, device and equipment of a generator and a vehicle. Background A 48V light-mix system, generally referred to as a P0 architecture light-mix system. The system is a mild hybrid power system capable of effectively saving fuel, improving driving feeling and improving network loss of electric appliances of the whole vehicle, and three-electricity (DC converter, BMS (Battery MANAGEMENT SYSTEM) Battery and BSG (Belt DRIVEN STARTER Generator )) is added compared with a 48V mild hybrid system of a traditional vehicle type. Conventionally, a vehicle is started by using a BSG which completes self-test after the vehicle is powered on, and the vehicle cannot be started when the BSG cannot complete self-test. In the prior art, in the process of initializing self-test, as other electric appliances of the whole vehicle are powered on sequentially (such as side stepping extension, radar starting, seat heating and the like), the 12-volt low-voltage power supply voltage value of the BSG is unstable, and even the power supply voltage value can be reduced to the minimum power supply voltage value of the low-voltage end set during self-test of the BSG, the self-test of the low-voltage end cannot be completed after the BSG is powered on, so that errors are reported in the self-test process, and the vehicle cannot be started. Therefore, how to improve the success rate of the self-test at the low-voltage end of the BSG, thereby improving the success rate of the self-test of the BSG, is a technical problem which needs to be solved by the technicians in the field. Disclosure of Invention In view of the above, the embodiments of the present application provide a self-checking method, device, equipment and vehicle for a generator, so as to improve the success rate of self-checking at the low voltage end of the BSG, thereby improving the success rate of self-checking of the BSG. In order to solve the above problems, the technical solution provided by the embodiment of the present application is as follows: A self-test method of a generator, the method comprising: Acquiring a vehicle door state; Responding to the vehicle door state being a preset door state, triggering a relay of a vehicle three-electricity to be closed, wherein the vehicle three-electricity comprises a direct current converter, a vehicle-mounted battery and a belt-driven starter generator; acquiring the power-on state of the belt-driven starter generator, and triggering the vehicle-mounted battery to precharge the high-voltage end of the direct-current converter; And responding to the power-on state of the belt-driven starter generator to be a preset power-on state, and the high-voltage end of the direct-current converter is pre-charged to a first preset voltage, triggering the belt-driven starter generator to perform high-voltage end self-test and low-voltage end self-test by using the high-voltage end of the direct-current converter. In one possible implementation, the method further includes: And responding to the success of the high-voltage end self-test and the low-voltage end self-test of the belt-driven starter generator, and triggering the belt-driven starter generator to enter a standby state. In one possible implementation, the method further includes: The method comprises the steps of responding to the success of self-checking at a high voltage end and the failure of self-checking at a low voltage end of the belt driven starting generator, and identifying diagnosis time and an internal voltage set value, wherein the diagnosis time is the time for diagnosing a circuit to be checked, voltage to be checked or any part to be checked of the belt driven starting generator; responsive to the diagnostic time being less than a preset time, increasing the diagnostic time to the preset time; and in response to the internal voltage set point being greater than a second preset voltage, reducing the internal voltage set point to the second preset voltage. In one possible implementation, the method further includes: and triggering the belt-driven starter generator to perform low-voltage end self-test again after the diagnosis time reaches a preset time and/or the internal voltage set value reaches a second preset voltage. In one possible implementation, the method further includes: and in response to the failure of the low-voltage end self-test of the belt-driven starter generator, the belt-driven starter generator fault lamp is lightened. In one possible implementation, the method further includes: and responding to failure of the self-checking of the high voltage end of the belt-driven starter generator, and lighting the fault lamp of the belt-driven starter generator. A self-test device for an electrical generator, the device comprising: a first acquisition unit configured to