A self-testing method, device, equipment, and vehicle for a generator.

Abstract

This application discloses a self-testing method, apparatus, device, and vehicle for a generator. It acquires the vehicle door status and, when the vehicle door status is a preset door status, triggers the closure of relays for the vehicle's three electrical systems, including a DC-DC converter, an onboard battery, and a belt-driven starter generator. The power-on status of the belt-driven starter generator is acquired, triggering the onboard battery to pre-charge the high-voltage terminal of the DC-DC converter. Then, when the power-on status of the belt-driven starter generator is a preset power-on status and the high-voltage terminal of the DC-DC converter is pre-charged to a first preset voltage, the motor is triggered to perform high-voltage and low-voltage self-tests using the high-voltage terminal of the DC-DC converter. This application improves the success rate of generator self-tests by changing the timing of the generator's low-voltage self-test; after the high-voltage terminal of the DC-DC converter is pre-charged to the first preset voltage, the high-voltage terminal of the DC-DC converter is used to supply power to the low-voltage terminal, ensuring the stability of the 12-volt supply voltage during the low-voltage self-test process.

Description

Technical Field

[0001] This application relates to the field of generator self-testing, specifically to a generator self-testing method, device, equipment, and vehicle. Background Technology

[0002] A 48V mild hybrid system generally refers to a P0 architecture mild hybrid system. It's a mild hybrid system that effectively saves fuel, improves driving experience, and reduces losses in the vehicle's electrical network. Compared to traditional 48V mild hybrid systems, it adds three key components: a DC-DC converter, a BMS (Battery Management System), a battery, and a BSG (Belt Driven Starter Generator). Normally, after the vehicle is powered on, it uses the BSG to start after completing a self-check. If the BSG fails to complete its self-check, the vehicle cannot start. In existing technology, during the BSG's initial self-check, the 12V low-voltage supply voltage of the BSG becomes unstable due to the successive power-on of other electrical components (such as side step extensions, radar activation, seat heating, etc.). The supply voltage may even drop to the minimum voltage that the BSG can supply at the low-voltage end during its self-check, causing the BSG to fail to complete the low-voltage end self-check after power-on, resulting in errors during the self-check process and ultimately preventing the vehicle from starting.

[0003] Therefore, how to improve the success rate of BSG low-voltage self-test, thereby improving the overall success rate of BSG self-test, is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, embodiments of this application provide a generator self-test method, apparatus, equipment, and vehicle to improve the success rate of BSG low-voltage side self-test, thereby improving the success rate of BSG self-test.

[0005] To address the above problems, the technical solutions provided in this application are as follows:

[0006] A self-test method for a generator, the method comprising:

[0007] Get the vehicle door status;

[0008] In response to the vehicle door being in a preset door state, the relays of the vehicle's three electrical systems are triggered to close, wherein the vehicle's three electrical systems include a DC-DC converter, an on-board battery, and a belt-driven starter generator.

[0009] The power-on status of the belt-driven starter generator is obtained, and the vehicle battery is triggered to pre-charge the high-voltage terminal of the DC converter.

[0010] In response to the belt-driven starter generator being powered on in a preset power-on state and the DC-DC converter being pre-charged to a first preset voltage, the belt-driven starter generator is triggered to perform high-voltage self-test and low-voltage self-test using the high-voltage terminal of the DC-DC converter.

[0011] In one possible implementation, the method further includes:

[0012] In response to the successful high-voltage and low-voltage self-tests of the belt-driven starter generator, the belt-driven starter generator is triggered to enter standby mode.

[0013] In one possible implementation, the method further includes:

[0014] In response to the belt-driven starter generator successfully performing a high-voltage self-test and failing a low-voltage self-test, the diagnostic time and internal voltage setting value are identified, wherein the diagnostic time is the time for the belt-driven starter generator to diagnose the circuit under test, the voltage under test, or any component under test; and the internal voltage setting value is the minimum value that the voltage under test can reach.

[0015] In response to the diagnosis time being less than a preset time, the diagnosis time is increased to the preset time;

[0016] In response to the internal voltage setting value being greater than the second preset voltage, the internal voltage setting value is reduced to the second preset voltage.

[0017] In one possible implementation, the method further includes:

[0018] In response to the diagnostic time reaching a preset time and / or the internal voltage setting value reaching a second preset voltage, the belt-driven starter generator is triggered to perform a low-voltage self-test again.

[0019] In one possible implementation, the method further includes:

[0020] In response to the failure of the low-voltage self-test of the belt-driven starter generator again, the fault light of the belt-driven starter generator is illuminated.

[0021] In one possible implementation, the method further includes:

[0022] In response to the failure of the high-voltage self-test of the belt-driven starter generator, the fault light of the belt-driven starter generator is illuminated.

[0023] A self-testing device for a generator, the device comprising:

[0024] The first acquisition unit is used to acquire the vehicle door status;

[0025] The first triggering unit, in response to the vehicle door state being a preset door state, is used to trigger the closing of the relays of the vehicle's three electrical systems, wherein the vehicle's three electrical systems include a DC-DC converter, an on-board battery, and a belt-driven starter generator.

[0026] The second acquisition unit is used to acquire the power-on status of the belt-driven starter generator;

[0027] A pre-charge unit is used to pre-charge the high-voltage end of the DC-DC converter;

[0028] The second triggering unit, in response to the belt-driven starter generator being powered on in a preset power-on state and the DC converter being pre-charged to a first preset voltage, is used to trigger the belt-driven starter generator to perform high-voltage self-test and low-voltage self-test using the high-voltage terminal of the DC converter.

[0029] In one possible implementation, the device further includes:

[0030] The third triggering unit, in response to the belt-driven starter generator successfully performing both high-voltage and low-voltage self-tests, is used to trigger the belt-driven starter generator to enter standby mode.

[0031] An electronic device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, it implements the self-test method for a generator as described above.

[0032] A vehicle includes a control module for performing a generator self-test method as described above.

[0033] Compared with the prior art, this application has the following beneficial effects:

[0034] This application provides a self-testing method, apparatus, device, and vehicle for a generator. Specifically, when executing the self-testing method for a generator provided in this application, the vehicle door status is first acquired. When the vehicle door status is a preset door status, the relays of the vehicle's three electrical systems are triggered to close. These three electrical systems include a DC-DC converter, an on-board battery, and a belt-driven starter generator. Next, the power-on status of the belt-driven starter generator is acquired, and the on-board battery is triggered to pre-charge the high-voltage terminal of the DC-DC converter. Finally, when the power-on status of the belt-driven starter generator is a preset power-on status, and the high-voltage terminal of the DC-DC converter is pre-charged to a first preset voltage, the belt-driven starter generator is triggered to perform high-voltage and low-voltage self-tests using the high-voltage terminal of the DC-DC converter. This application improves the self-test success rate of the belt-driven starter generator by changing the timing of the low-voltage self-test of the belt-driven starter generator. After the high-voltage terminal of the DC-DC converter is pre-charged to the first preset voltage, the high-voltage terminal of the DC-DC converter is used to supply power to the low-voltage terminal of the belt-driven starter generator, ensuring the stability of the 12-volt supply voltage during the low-voltage self-test process. In addition, the voltage for the low-voltage self-test is no longer provided by the vehicle's battery, but by the DC-DC converter, thus ensuring the stability of the low-voltage self-test voltage and further improving the success rate of the belt-driven starter generator's self-test. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings used in the description of the embodiment or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A schematic diagram illustrating an exemplary application scenario provided in this application embodiment;

[0037] Figure 2 A flowchart illustrating a self-test method for a generator provided in this application embodiment;

[0038] Figure 3 This is a schematic diagram of the structure of a generator self-testing device provided in an embodiment of this application. Detailed Implementation

[0039] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0040] To facilitate understanding of the technical solutions provided in the embodiments of this application, the background technology involved in the embodiments of this application will be described below.

[0041] A 48V mild hybrid system generally refers to a P0 architecture mild hybrid system. It's a mild hybrid system that effectively saves fuel, improves driving experience, and reduces losses in the vehicle's electrical network. Compared to traditional 48V mild hybrid systems, it adds three key components: a DC-DC converter, a BMS (Battery Management System), a battery, and a BSG (Belt Driven Starter Generator). Normally, after the vehicle is powered on, it uses the BSG to start after completing a self-check. If the BSG fails to complete its self-check, the vehicle cannot start. In existing technology, during the BSG's initial self-check, the 12V low-voltage supply voltage of the BSG becomes unstable due to the successive power-on of other electrical components (such as side step extensions, radar activation, seat heating, etc.). The supply voltage may even drop to the minimum voltage that the BSG can supply at the low-voltage end during its self-check, causing the BSG to fail to complete the low-voltage end self-check after power-on, resulting in errors during the self-check process and ultimately preventing the vehicle from starting.

[0042] To address this issue, this application provides a generator self-test method, apparatus, device, and vehicle. First, the vehicle door status is acquired. When the vehicle door status is a preset door status, the relays of the vehicle's three electrical systems are triggered to close. These three electrical systems include a DC-DC converter, an onboard battery, and a belt-driven starter generator. The power-on status of the belt-driven starter generator is acquired, and the onboard battery is triggered to pre-charge the high-voltage terminal of the DC-DC converter. Then, when the power-on status of the belt-driven starter generator is a preset power-on status and the high-voltage terminal of the DC-DC converter is pre-charged to a first preset voltage, the belt-driven starter generator is triggered to perform high-voltage and low-voltage self-tests using the high-voltage terminal of the DC-DC converter. This application improves the success rate of generator self-test by changing the timing of the low-voltage self-test of the belt-driven starter generator. After the high-voltage terminal of the DC-DC converter is pre-charged to the first preset voltage, the high-voltage terminal of the DC-DC converter is used to supply power to the low-voltage terminal, ensuring the stability of the 12-volt supply voltage during the low-voltage self-test process. In addition, the voltage for the low-voltage self-test is no longer provided by the vehicle's battery, but by the DC-DC converter, thus avoiding the impact of other electrical appliances being powered on on the stability of the low-voltage self-test voltage, and further improving the self-test success rate of the belt-driven starter generator.

[0043] To facilitate understanding of the generator self-test method provided in the embodiments of this application, the following is combined with... Figure 1 The example scenario is shown below. See also... Figure 1This figure is a schematic diagram of an exemplary application scenario provided in the embodiments of this application.

[0044] First, the vehicle door status is acquired, including both unlocked and locked states. When the vehicle door status is a preset state, the relays for the vehicle's three main electrical components (DC converter, onboard battery, and belt-driven starter generator) are activated. The preset door status can be understood as a pre-defined target state for the door, which triggers the closure of the relays for the three main electrical components. These relays are used to power on the three main electrical components. Next, the power-on state of the belt-driven starter generator is acquired, triggering the onboard battery to pre-charge the high-voltage side of the DC converter. The power-on state of the belt-driven starter generator can be understood as its energized state. Pre-charging refers to charging the high-voltage side of the DC converter before it is used. The onboard battery can be understood as the battery pack of the BMS (Battery Management System). When the belt-driven starter generator is powered on in a preset power-on state and the high-voltage terminal of the DC-DC converter is pre-charged to a first preset voltage, the belt-driven starter generator is triggered to perform high-voltage and low-voltage self-tests using the high-voltage terminal of the DC-DC converter. The preset power-on state can be understood as one of the pre-set conditions that trigger the belt-driven starter generator to perform high-voltage and low-voltage self-tests using the high-voltage terminal of the DC-DC converter; it is generally set to the belt-driven starter generator being powered on. The first preset voltage can be understood as another pre-set condition that triggers the belt-driven starter generator to perform high-voltage and low-voltage self-tests using the high-voltage terminal of the DC-DC converter; it is generally set to 24 volts. This application improves the success rate of the generator self-test by changing the timing of the generator's low-voltage self-test. After the high-voltage terminal of the DC-DC converter is pre-charged to the first preset voltage, the high-voltage terminal of the DC-DC converter supplies power to the low-voltage terminal, ensuring the stability of the 12-volt supply voltage during the low-voltage self-test process.

[0045] Those skilled in the art will understand that Figure 1 The schematic diagram shown is merely one example in which embodiments of this application can be implemented. The scope of application of the embodiments of this application is not limited by any aspect of this framework.

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0047] See Figure 2The figure is a flowchart of a generator self-test method provided in an embodiment of this application. Figure 2 As shown, the self-test method for this generator may include steps S201-S204:

[0048] S201: Obtain the vehicle door status.

[0049] The belt-driven starter generator only needs to perform high-voltage and low-voltage self-tests when the vehicle may be started. When a vehicle door is unlocked, it indicates that the vehicle may be started. Therefore, to trigger the belt-driven starter generator to perform high-voltage and low-voltage self-tests, the status of the vehicle doors must first be obtained.

[0050] In one possible implementation, the vehicle door status includes the vehicle door being unlocked or the vehicle door being locked.

[0051] S202: In response to the vehicle door being in a preset door state, the relays of the vehicle's three electrical systems are triggered to close, wherein the vehicle's three electrical systems include a DC-DC converter, an on-board battery, and a belt-driven starter generator.

[0052] Once the vehicle door status is obtained and it is determined to be the preset door status, the relays of the vehicle's three electrical systems need to be triggered to close in order for the belt-driven starter generator to perform high-voltage and low-voltage self-tests. These three electrical systems include the DC-DC converter, the onboard battery, and the belt-driven starter generator. Triggering the closing of these relays ensures that the DC-DC converter, the onboard battery, and the belt-driven starter generator are powered on.

[0053] In one possible implementation, the preset door state can be, but is not limited to, a pre-set target state for the door, which is generally set to the door being in the unlocked state.

[0054] In one possible implementation, the vehicle's three-electric relay refers to the relay used to power the three electrical components: the DC-DC converter, the vehicle battery, and the belt-driven starter generator.

[0055] S203: Obtain the power-on status of the belt-driven starter generator and trigger the vehicle battery to pre-charge the high-voltage end of the DC converter.

[0056] To trigger the high-voltage and low-voltage self-tests of the belt-driven starter generator, it is essential to ensure that the belt-driven starter generator is powered on. Therefore, after triggering the relays for the vehicle's three electrical systems, it is necessary to reconfirm that the belt-driven starter generator is powered on. Simultaneously, during the high-voltage and low-voltage self-tests, the high-voltage side of the DC-DC converter requires a stable voltage for the self-test. Therefore, after triggering the relays for the vehicle's three electrical systems, it is also necessary to trigger the onboard battery to pre-charge the high-voltage side of the DC-DC converter.

[0057] In one possible implementation, the energized state of the belt-driven starter generator can be, but is not limited to, the energized state of the belt-driven starter generator.

[0058] In one possible implementation, precharging can be, but is not limited to, precharging the high-voltage side of the DC-DC converter before it is used.

[0059] In one possible implementation, the vehicle battery can be, but is not limited to, a BMS (Battery Management System) battery pack.

[0060] S204: In response to the belt-driven starter generator being powered on in a preset power-on state and the DC-DC converter being pre-charged to a first preset voltage, the belt-driven starter generator is triggered to perform high-voltage self-test and low-voltage self-test using the high-voltage terminal of the DC-DC converter.

[0061] When the belt-driven starter generator is powered on in the preset power-on state, and the high-voltage terminal of the DC-DC converter used for self-testing is pre-charged to the first preset voltage to provide a stable self-test voltage for the belt-driven starter generator, it can be ensured that the belt-driven starter generator will not fail to self-test due to external interference during high-voltage and low-voltage self-tests. Therefore, after obtaining the power-on state of the belt-driven starter generator and triggering the on-board battery to pre-charge the high-voltage terminal of the DC-DC converter, the high-voltage terminal of the DC-DC converter is used to provide the self-test voltage for the belt-driven starter generator only when the power-on state of the belt-driven starter generator is the preset power-on state and the high-voltage terminal of the DC-DC converter is pre-charged to the first preset voltage, thereby performing the high-voltage and low-voltage self-tests of the belt-driven starter generator.

[0062] In one possible implementation, the preset power-on state can be, but is not limited to, one of the pre-set conditions that can trigger the belt-driven starter generator to perform high-voltage and low-voltage self-tests using the high-voltage side of the DC converter. Generally, it is set to the belt-driven starter generator being in the power-on state.

[0063] In one possible implementation, the first preset voltage can be, but is not limited to, another pre-set condition that can trigger the belt-driven generator to perform high-voltage and low-voltage self-tests using the high-voltage side of the DC converter, typically set to 24 volts.

[0064] In one possible implementation, high-voltage and low-voltage self-tests refer to the belt-driven starter generator checking its internal chips and circuits to ensure they are functioning correctly, and also checking whether the external voltage supplied to the belt-driven starter generator matches the internal voltage setting. The internal voltage setting is typically set to 8.5 volts.

[0065] In one possible implementation, the method further includes:

[0066] When both the high-voltage end self-test and the low-voltage end self-test of the belt-driven starter generator are successfully completed, it indicates that there is no problem inside the belt-driven starter generator. At this time, the belt-driven starter generator can output torque to start the vehicle. Then, the belt-driven starter generator is triggered to enter the standby state, ready to start the vehicle at any time.

[0067] In one possible implementation, the standby state can be, but is not limited to, a state where the belt-driven starter generator can output torque and generate electricity.

[0068] In one possible implementation, the method further includes A1-A3:

[0069] A1: In response to the belt-driven starter generator successfully performing a high-voltage self-test and failing a low-voltage self-test, identify the diagnostic time and internal voltage setting value, wherein the diagnostic time is the time for the belt-driven starter generator to diagnose the circuit under test, the voltage under test, or any component under test; and the internal voltage setting value is the minimum value that the voltage under test can reach.

[0070] When a belt-driven starter generator performs a low-voltage self-test, there is a problem that the diagnostic time is too short or the external input voltage is too low, or the internal voltage setting value is too high, which may cause the low-voltage self-test of the belt-driven starter generator to fail. Therefore, when the belt-driven starter generator performs a high-voltage self-test successfully but the low-voltage self-test fails, it is possible to identify whether the diagnostic time of the self-test is too short or whether the internal voltage setting value of the self-test is too high.

[0071] The diagnostic time refers to the time required for the belt-driven starter generator to diagnose the circuit, voltage, or any component under test. The internal voltage setting is the minimum allowable voltage under test, typically set to 8.5 volts.

[0072] A2: In response to the diagnosis time being less than a preset time, the diagnosis time is increased to the preset time.

[0073] If the diagnostic time is less than the preset time, it indicates that the reason for the failure of the low-voltage end self-test of the belt-driven starter generator may be that the diagnostic time is too short. In this case, the self-test efficiency of the generator can be improved by increasing the diagnostic time to the preset time.

[0074] In one possible implementation, the preset time can be, but is not limited to, 2 milliseconds. The preset time can be adjusted according to user needs, and this application does not impose specific limitations on the preset time.

[0075] A3: In response to the internal voltage setting value being greater than the second preset voltage, the internal voltage setting value is reduced to the second preset voltage.

[0076] If the internal voltage setting value is greater than the second preset voltage, it indicates that the reason for the failure of the low-voltage self-test of the belt-driven starter generator may be that the internal voltage setting value is too high. In this case, the self-test efficiency of the generator can be improved by reducing the internal voltage setting value.

[0077] In one possible implementation, the second preset voltage may be, but is not limited to, 7.5 volts. The second preset voltage can be adjusted according to user needs. This application does not specifically limit the preset time.

[0078] When the low-voltage self-test of the belt-driven starter generator fails, the success rate of the low-voltage self-test can be indirectly improved by increasing the diagnostic time to a preset time and / or decreasing the internal voltage setting to a second preset voltage.

[0079] In one possible implementation, the method further includes:

[0080] In response to the diagnostic time reaching a preset time and / or the internal voltage setting value reaching a second preset voltage, the belt-driven starter generator is triggered to perform a low-voltage self-test again.

[0081] To eliminate the possibility of low-voltage self-test failure due to excessively short diagnostic time or excessively high internal voltage setting, the belt-driven starter generator can be triggered to perform a low-voltage self-test again after the diagnostic time reaches a preset time and / or the internal voltage setting reaches a second preset voltage. By identifying and adjusting the diagnostic time and internal voltage setting, an additional low-voltage self-test opportunity is added, further increasing the success rate of generator self-test.

[0082] In one possible implementation, the method further includes:

[0083] In response to the failure of the low-voltage self-test of the belt-driven starter generator again, the fault light of the belt-driven starter generator is illuminated.

[0084] If the belt-driven starter generator fails the low-voltage self-test again, it indicates that the failure is not due to an unstable or slightly low external voltage in the generator's chip, circuitry, or external input voltage. In this case, the fault indicator light should be illuminated to alert the user to the problem and prompt timely repair.

[0085] In one possible implementation, the method further includes:

[0086] In response to the failure of the high-voltage self-test of the belt-driven starter generator, the fault light of the belt-driven starter generator is illuminated.

[0087] When the belt-driven starter generator fails to perform a high-voltage self-test, the fault light will illuminate to alert the user that there is a problem with the belt-driven starter generator, allowing the user to have it repaired promptly.

[0088] Based on the content of S201-S204, firstly, the vehicle door status is acquired, and when the vehicle door status is a preset door status, the relays of the vehicle's three electrical systems are triggered to close. These three electrical systems include a DC-DC converter, an on-board battery, and a belt-driven starter generator. Then, the power-on status of the belt-driven starter generator is acquired, and the on-board battery is triggered to pre-charge the high-voltage terminal of the DC-DC converter. Finally, when the power-on status of the belt-driven starter generator is a preset power-on status and the high-voltage terminal of the DC-DC converter is pre-charged to a first preset voltage, the belt-driven starter generator is triggered to perform high-voltage and low-voltage self-tests using the high-voltage terminal of the DC-DC converter. This application improves the success rate of the generator self-test by changing the timing of the generator's low-voltage self-test. After the high-voltage terminal of the DC-DC converter is pre-charged to the first preset voltage, the high-voltage terminal of the DC-DC converter is used to supply power to the low-voltage terminal, ensuring the stability of the 12-volt supply voltage during the low-voltage self-test process. In addition, the voltage for the low-voltage self-test is no longer provided by the vehicle's battery, but by the DC-DC converter, thus avoiding the impact of other electrical appliances being powered on on the stability of the low-voltage self-test voltage, and further improving the self-test success rate of the belt-driven starter generator.

[0089] The above are some specific implementations of the generator self-test method provided in the embodiments of this application. Based on this, this application also provides a corresponding self-test device for a generator. The device provided in the embodiments of this application will be described below from the perspective of functional modularity.

[0090] See Figure 3 The figure is a schematic diagram of the structure of a generator self-testing device provided in an embodiment of this application. Figure 3 As shown, the generator's self-test device includes:

[0091] The first acquisition unit 301 is used to acquire the vehicle door status.

[0092] In one possible implementation, the vehicle door status includes the vehicle door being unlocked or the vehicle door being locked.

[0093] The first triggering unit 302, in response to the vehicle door state being a preset door state, is used to trigger the closing of relays for the vehicle's three electrical systems, including a DC-DC converter, an on-board battery, and a belt-driven starter generator.

[0094] In one possible implementation, the preset door state can be, but is not limited to, a pre-set target state for the door, which is generally set to the door being in the unlocked state.

[0095] In one possible implementation, the vehicle's three-electric relay refers to the relay used to power the three electrical components: the DC-DC converter, the vehicle battery, and the belt-driven starter generator.

[0096] The second acquisition unit 303 is used to acquire the power-on status of the belt-driven starter generator.

[0097] In one possible implementation, the energized state of the belt-driven starter generator can be, but is not limited to, the energized state of the belt-driven starter generator.

[0098] In one possible implementation, the vehicle battery can be, but is not limited to, a BMS (Battery Management System) battery pack.

[0099] The pre-charge unit 304 is used to pre-charge the high-voltage end of the DC converter.

[0100] In one possible implementation, precharging can be, but is not limited to, precharging the high-voltage side of the DC-DC converter before it is used.

[0101] The second trigger unit 305, in response to the power-on state of the belt-driven starter generator being a preset power-on state and the high-voltage end of the DC converter being pre-charged to a first preset voltage, is used to trigger the belt-driven starter generator to perform high-voltage end self-test and low-voltage end self-test using the high-voltage end of the DC converter.

[0102] In one possible implementation, the preset power-on state can be, but is not limited to, one of the pre-set conditions that can trigger the belt-driven starter generator to perform high-voltage and low-voltage self-tests using the high-voltage side of the DC converter. Generally, it is set to the belt-driven starter generator being in the power-on state.

[0103] In one possible implementation, the first preset voltage can be, but is not limited to, another pre-set condition that can trigger the belt-driven generator to perform high-voltage and low-voltage self-tests using the high-voltage side of the DC converter, typically set to 24 volts.

[0104] In one possible implementation, high-voltage and low-voltage self-tests refer to the belt-driven starter generator checking its internal chips and circuits to ensure they are functioning correctly, and also checking whether the external voltage supplied to the belt-driven starter generator matches the internal voltage setting. The internal voltage setting is typically set to 8.5 volts.

[0105] In one possible implementation, the device further includes:

[0106] The identification unit, in response to the belt-driven starter generator successfully performing a high-voltage self-test and failing a low-voltage self-test, is used to identify the diagnostic time and internal voltage setting value, wherein the diagnostic time is the time for the belt-driven starter generator to diagnose the circuit under test, the voltage under test, or any component under test; and the internal voltage setting value is the minimum value that the voltage under test can reach.

[0107] The time setting unit, in response to the diagnosis time being less than a preset time, is used to increase the diagnosis time to the preset time.

[0108] In one possible implementation, the preset time can be, but is not limited to, 2 milliseconds. The preset time can be adjusted according to user needs, and this application does not impose specific limitations on the preset time.

[0109] An internal voltage setting unit, in response to the internal voltage setting value being greater than a second preset voltage, is used to reduce the internal voltage setting value to the second preset voltage.

[0110] In one possible implementation, the second preset voltage may be, but is not limited to, 7.5 volts. The second preset voltage can be adjusted according to user needs. This application does not specifically limit the preset time.

[0111] In one possible implementation, the device further includes:

[0112] The third triggering unit, in response to the belt-driven starter generator successfully performing both high-voltage and low-voltage self-tests, is used to trigger the belt-driven starter generator to enter standby mode.

[0113] In one possible implementation, the standby state can be, but is not limited to, a state where the belt-driven starter generator can output torque and generate electricity.

[0114] In one possible implementation, the device further includes:

[0115] The fourth triggering unit, in response to the diagnostic time reaching a preset time and / or the internal voltage setting value reaching a second preset voltage, is used to trigger the belt-driven starter generator to perform a low-voltage self-test again.

[0116] In one possible implementation, the preset time can be, but is not limited to, 2 milliseconds. The preset time can be adjusted according to user needs, and this application does not impose specific limitations on the preset time.

[0117] In one possible implementation, the second preset voltage may be, but is not limited to, 7.5 volts. The second preset voltage can be adjusted according to user needs. This application does not specifically limit the preset time.

[0118] In one possible implementation, the device further includes:

[0119] The first illumination unit, in response to the failure of the low-voltage self-test of the belt-driven starter generator again, is used to illuminate the fault light of the belt-driven starter generator.

[0120] The second illumination unit is used to illuminate the fault light of the belt-driven starter generator in response to the failure of the high-voltage end self-test of the belt-driven starter generator.

[0121] In addition, this application embodiment also provides a generator self-testing device, the device including a memory and a processor, the memory for storing programs or code, and the processor for running the programs or code stored in the memory to implement the above-described generator self-testing method.

[0122] In addition, this application embodiment also provides a vehicle, characterized in that the vehicle includes a control module, the control module being used to execute the above-described generator self-test method.

[0123] This application embodiment provides a self-testing device for a generator. After the first acquisition unit 301 acquires the vehicle door status, the first triggering unit 302 triggers the relays of the vehicle's three electrical systems to close when the vehicle door status is a preset door status. The three electrical systems include a DC-DC converter, a vehicle battery, and a belt-driven starter generator. Then, the second acquisition unit 303 acquires the power-on status of the belt-driven starter generator, while the pre-charging unit 304 pre-charges the high-voltage terminal of the DC-DC converter. When the second acquisition unit 303 acquires that the power-on status of the belt-driven starter generator is a preset power-on status, and the pre-charging unit 304 has pre-charged the high-voltage terminal of the DC-DC converter to a first preset voltage, the second triggering unit 305 triggers the belt-driven starter generator to perform a high-voltage self-test and a low-voltage self-test using the high-voltage terminal of the DC-DC converter. This application improves the success rate of generator self-test by modifying the timing of the low-voltage side self-test. After the high-voltage side of the DC-DC converter is pre-charged to a first preset voltage, the high-voltage side of the DC-DC converter supplies power to the low-voltage side. This ensures the stability of the 12-volt supply voltage during the low-voltage side self-test, thereby increasing the success rate of generator self-test. Furthermore, the voltage for the low-voltage side self-test is no longer provided by the vehicle's battery but by the DC-DC converter. This avoids the impact of other electrical appliances being powered on sequentially on the stability of the low-voltage side self-test voltage, further improving the success rate of belt-driven starter generator self-test.

[0124] The foregoing has provided a detailed description of a generator self-testing method, apparatus, device, and storage medium provided in this application. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0125] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0126] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0127] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0128] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-testing method for a generator, characterized in that, The method includes: Get the vehicle door status; In response to the vehicle door being in a preset door state, the relays of the vehicle's three electrical systems are triggered to close, wherein the vehicle's three electrical systems include a DC-DC converter, an on-board battery, and a belt-driven starter generator. The power-on status of the belt-driven starter generator is obtained, and the vehicle battery is triggered to pre-charge the high-voltage terminal of the DC converter. In response to the belt-driven starter generator being powered on in a preset power-on state and the DC-DC converter being pre-charged to a first preset voltage, the belt-driven starter generator is triggered to perform high-voltage self-test and low-voltage self-test using the high-voltage terminal of the DC-DC converter.

2. The method according to claim 1, characterized in that, The method further includes: In response to the successful high-voltage and low-voltage self-tests of the belt-driven starter generator, the belt-driven starter generator is triggered to enter standby mode.

3. The method according to claim 1, characterized in that, The method further includes: In response to the belt-driven starter generator successfully performing a high-voltage self-test and failing a low-voltage self-test, the diagnostic time and internal voltage setting value are identified, wherein the diagnostic time is the time for the belt-driven starter generator to diagnose the circuit under test, the voltage under test, or any component under test; and the internal voltage setting value is the minimum value that the voltage under test can reach. In response to the diagnosis time being less than a preset time, the diagnosis time is increased to the preset time; In response to the internal voltage setting value being greater than the second preset voltage, the internal voltage setting value is reduced to the second preset voltage.

4. The method according to claim 3, characterized in that, The method further includes: In response to the diagnostic time reaching a preset time and / or the internal voltage setting value reaching a second preset voltage, the belt-driven starter generator is triggered to perform a low-voltage self-test again.

5. The method according to claim 4, characterized in that, The method further includes: In response to the failure of the low-voltage self-test of the belt-driven starter generator again, the fault light of the belt-driven starter generator is illuminated.

6. The method according to claim 1, characterized in that, The method further includes: In response to the failure of the high-voltage self-test of the belt-driven starter generator, the fault light of the belt-driven starter generator is illuminated.

7. A self-testing device for a generator, characterized in that, The device includes: The first acquisition unit is used to acquire the vehicle door status; The first triggering unit, in response to the vehicle door state being a preset door state, is used to trigger the closing of the relays of the vehicle's three electrical systems, wherein the vehicle's three electrical systems include a DC-DC converter, an on-board battery, and a belt-driven starter generator. The second acquisition unit is used to acquire the power-on status of the belt-driven starter generator; A pre-charge unit is used to pre-charge the high-voltage end of the DC-DC converter; The second triggering unit, in response to the belt-driven starter generator being powered on in a preset power-on state and the DC converter being pre-charged to a first preset voltage, is used to trigger the belt-driven starter generator to perform high-voltage self-test and low-voltage self-test using the high-voltage terminal of the DC converter.

8. The apparatus according to claim 7, characterized in that, The device further includes: The third triggering unit, in response to the successful high-voltage and low-voltage self-tests of the belt-driven starter generator, is used to trigger the belt-driven starter generator to enter standby mode.

9. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the self-testing method for a generator as described in any one of claims 1-6.

10. A vehicle, characterized in that, The vehicle includes a control module for performing a self-test method for the generator as described in any one of claims 1-6.

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