Converter control method and device, related equipment, medium and product

Abstract

The invention relates to a converter control method and device, related equipment, a medium and a product. The converter is used for converting an input alternating-current electric signal into a direct-current electric signal to charge a battery, the converter comprises a rectifying circuit unit, and the control method comprises the steps that when a charging instruction is received, a reference carrier signal is generated according to a current voltage value of the battery, a target voltage value of the battery and the alternating-current electric signal; generating a first type of driving signal for controlling the rectification circuit unit to work at least according to the reference carrier signal, wherein the first type of driving signal is at least used for controlling a target power device in the rectification circuit unit to be in a normally-off state; and controlling the rectification circuit unit to work by using the first type of driving signal. Thus, in the charging stage, the problem that the charging efficiency is poor due to the fact that the electric quantity in the battery flows back to the converter can be avoided, and the reliability of the converter is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular to a control method, device, related equipment, medium and product of a converter. Background Art

[0002] The on-board charger OBC of electric vehicles is used to convert AC power into DC power to charge the vehicle's power battery. The on-board charger OBC has a built-in converter, which is used to convert AC power into DC power. At present, isolated AC-DC converters usually adopt a two-stage structure, consisting of two independent single-stage converters. The first stage is a power factor correction AC-DC converter, and the second stage is an isolated DC-DC converter. An electrolytic capacitor is connected between the first and second stages, and the electrolytic capacitor is used for energy buffering. However, the two-stage AC-DC converter has the problem of more components and higher hardware cost.

[0003] At present, the market and academia are promoting the evolution of two-stage AC-DC converters towards a single-stage topology, so that the single-stage AC-DC converter can not only save electrolytic capacitors but also reduce the number of power electronic switching devices on the basis of achieving the above functions. Compared with the two-stage AC-DC converter, the single-stage AC-DC converter is smaller in size, more efficient, lower in cost, and has a significantly improved service life. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a control method, device, related equipment, medium and product of a converter.

[0005] According to a first aspect of an embodiment of the present disclosure, a control method of a converter is provided, wherein the converter is used to convert an input AC power signal into a DC power signal for charging a battery, the converter includes a rectifier circuit unit, and the control method includes:

[0006] When receiving a charging instruction, generating a reference carrier signal according to a current voltage value of the battery, a target voltage value of the battery and the AC power signal;

[0007] generating a first type of drive signal for controlling the operation of the rectifier circuit unit at least according to the reference carrier signal, wherein the first type of drive signal is at least used to control a target power device in the rectifier circuit unit to be in a normally-off state;

[0008] The first type of driving signal is used to control the operation of the rectifier circuit unit.

[0009] Optionally, the rectifier circuit unit includes a first bridge arm and a second bridge arm, the first bridge arm includes a first power device and a second power device, the second bridge arm includes a third power device and a fourth power device, the first power device is located at an upper bridge arm of the first bridge arm, the second power device is located at a lower bridge arm of the first bridge arm, the third power device is located at an upper bridge arm of the second bridge arm, and the fourth power device is located at a lower bridge arm of the second bridge arm;

[0010] The target power device includes the first power device and the third power device; or, the target power device includes the second power device and the fourth power device.

[0011] Optionally, the first type of driving signal includes a second driving signal for controlling the target power device to be in a normally-off state and a first driving signal for controlling other power devices in the rectifying circuit unit except the target power device;

[0012] The step of generating a first type of driving signal for controlling the operation of the rectifying circuit unit at least according to the reference carrier signal comprises:

[0013] A first driving signal for controlling the operation of other power devices in the rectifying circuit unit except the target power device is generated according to the reference carrier signal and a preset duty cycle of the driving signal.

[0014] Optionally, other power devices in the rectifier circuit unit except the target power device include a first target power device and a second target power device;

[0015] The step of generating a first driving signal for controlling the operation of other power devices in the rectifying circuit unit except the target power device according to the reference carrier signal and the preset duty cycle of the driving signal includes:

[0016] Generate a reference signal according to the reference carrier signal and the preset duty cycle of the driving signal, wherein the amplitude of the reference signal does not change with the phase of the alternating current signal;

[0017] Input the reference signal to the positive input terminal of the first comparator, shift the reference carrier signal by a preset phase and input it to the negative input terminal of the first comparator, so as to obtain a first sub-driving signal output by the first comparator for controlling the operation of the first target power device;

[0018] The first sub-driving signal is input into a first inverter to obtain a second sub-driving signal output by the first inverter for controlling the operation of the second target power device.

[0019] Optionally, the generating of the first type of driving signal for controlling the operation of the rectifying circuit unit at least according to the reference carrier signal further includes:

[0020] The preset signal is input into the positive input terminal of the second comparator, and the reference carrier signal is input into the negative input terminal of the second comparator to obtain a second drive signal output by the second comparator, wherein the second drive signal is used to control the target power device to be in a normally disconnected state.

[0021] Optionally, the converter includes a high-frequency bridge arm, and the control method further includes:

[0022] Generate a second type of driving signal for controlling the operation of the high-frequency bridge arm according to the reference carrier signal and the reference signal, wherein the first driving signal delays the second type of driving signal by a preset phase;

[0023] The second type of driving signal is used to control the operation of the high-frequency bridge arm.

[0024] Optionally, the high-frequency bridge arm includes a first group of pairs of tubes and a second group of pairs of tubes, and the second type of driving signal includes a third sub-driving signal for controlling the operation of the first group of pairs of tubes and a fourth sub-driving signal for controlling the operation of the second group of pairs of tubes;

[0025] The step of generating a second type of driving signal for controlling the operation of the high-frequency bridge arm according to the reference carrier signal and the reference signal comprises:

[0026] Input the reference carrier signal into the negative input terminal of the third comparator, input the reference signal into the positive input terminal of the third comparator, and obtain a third sub-driving signal output by the third comparator for controlling the operation of the first group of tubes;

[0027] Inputting the third sub-driving signal into the second inverter to obtain a fourth sub-driving signal output by the second inverter for controlling the operation of the second group of transistors;

[0028] Among them, if the first target power device is the first power device or the fourth power device, the first group of pairs of tubes includes: a fifth power device located in the upper bridge arm of the third bridge arm in the high-frequency bridge arm and an eighth power device located in the lower bridge arm of the fourth bridge arm in the high-frequency bridge arm; if the first target power device is the second power device or the third power device, the first group of pairs of tubes includes: a sixth power device located in the lower bridge arm of the third bridge arm in the high-frequency bridge arm and a seventh power device located in the upper bridge arm of the fourth bridge arm in the high-frequency bridge arm.

[0029] Optionally, the cycle of the AC signal includes a positive half cycle and a negative half cycle; the converter further includes an industrial frequency bridge arm, the industrial frequency bridge arm includes a ninth power device and a tenth power device, the ninth power device is located at an upper bridge arm of the industrial frequency bridge arm, and the tenth power device is located at a lower bridge arm of the industrial frequency bridge arm; the control method further includes:

[0030] In the positive half cycle, controlling the tenth power device to be turned on and the ninth power device to be turned off;

[0031] In the negative half cycle, the tenth power device is controlled to be turned off and the ninth power device is controlled to be turned on.

[0032] Optionally, when receiving a charging instruction, generating a reference carrier signal according to a current voltage value of the battery, a target voltage value of the battery and the AC power signal includes:

[0033] Obtaining a target current value according to a difference between a current voltage value of the battery and a target voltage value of the battery;

[0034] Obtaining a frequency control parameter according to the target current value and the current value of the AC power signal, wherein the frequency control parameter can indicate the frequency of a reference carrier signal to be generated;

[0035] A reference carrier signal is generated according to the frequency control parameter.

[0036] According to a second aspect of an embodiment of the present disclosure, a control device of a converter is provided, wherein the converter is used to convert an input AC power signal into a DC power signal for charging a battery, wherein the converter includes a rectifier circuit unit, and the control device of the converter includes:

[0037] A first generating module is configured to generate a reference carrier signal according to a current voltage value of the battery, a target voltage value of the battery and the AC power signal when receiving a charging instruction;

[0038] A second generating module is configured to generate a first type of driving signal for controlling the operation of the rectifying circuit unit at least according to the reference carrier signal, wherein the first type of driving signal is at least used to control a target power device of the rectifying circuit unit to be in a normally disconnected state;

[0039] The first control module is configured to control the operation of the rectifier circuit unit using the first type of driving signal.

[0040] According to a third aspect of an embodiment of the present disclosure, there is provided a control device, including:

[0041] processor;

[0042] a memory for storing processor-executable instructions;

[0043] The processor is configured to execute the instructions to implement the steps of the converter control method as described in the first aspect of the embodiment of the present disclosure.

[0044] According to a fourth aspect of an embodiment of the present disclosure, there is provided a vehicle-mounted charger, comprising: a converter and a control device as described in the third aspect of the embodiment of the present disclosure.

[0045] According to a fifth aspect of an embodiment of the present disclosure, a vehicle is provided, comprising: a battery and the on-board charger as described in the fourth aspect of an embodiment of the present disclosure.

[0046] According to a sixth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which computer program instructions are stored. When the computer program instructions are executed by a processor, the steps of the control method of the converter described in the first aspect of the embodiment of the present disclosure are implemented.

[0047] According to a seventh aspect of an embodiment of the present disclosure, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the steps of the method for controlling a converter described in the first aspect of an embodiment of the present disclosure.

[0048] By adopting the above technical solution, at least a first type of driving signal for controlling the rectifier circuit unit is generated according to the reference carrier signal, and the first type of driving signal is at least used to control the target power device in the rectifier circuit unit to be in a normally disconnected state, and the first type of driving signal is used to control the operation of the rectifier circuit unit. In this way, during the charging stage, the problem of poor charging efficiency caused by the reverse flow of electricity in the battery to the converter can be avoided, thereby improving the reliability of the converter.

[0049] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0051] Figure 1 It is a schematic diagram showing an application scenario according to an exemplary embodiment.

[0052] Figure 2 is a block diagram of a converter according to an exemplary embodiment.

[0053] Figure 3 The figure is a flow chart of a method for controlling a converter according to an exemplary embodiment.

[0054] Figure 4 The diagram is a schematic diagram showing a method of generating a reference carrier signal according to an exemplary embodiment.

[0055] Figure 5 is a circuit diagram of a converter according to an exemplary embodiment.

[0056] Figure 6 is a schematic diagram showing a method of generating a first driving signal according to an exemplary embodiment.

[0057] Figure 7 is a schematic diagram showing a method of generating a second driving signal according to an exemplary embodiment.

[0058] Figure 8 is a schematic diagram showing a method of generating a second type of driving signal according to an exemplary embodiment.

[0059] Fig. 9 is a schematic diagram of a driving signal according to an exemplary embodiment.

[0060] Fig.10 is a block diagram of a control device for a converter according to an exemplary embodiment.

[0061] Fig.11 is a block diagram of a vehicle according to an exemplary embodiment. DETAILED DESCRIPTION

[0062] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0063] The embodiments described in some embodiments of the present disclosure below do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0064] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0065] Currently, during the operation of a single-stage AC-DC converter, for example, during the charging stage, the power in the battery may flow back into the converter, resulting in poor charging efficiency and poor reliability of the converter.

[0066] In view of this, the present disclosure provides a control method, device, related equipment, medium and product of a converter, which generates a first type of drive signal for controlling a rectifier circuit unit according to at least a reference carrier signal, and the first type of drive signal is at least used to control a target power device in the rectifier circuit unit to be in a normally disconnected state, and the first type of drive signal is used to control the operation of the rectifier circuit unit. In this way, during the charging stage, the problem of poor charging efficiency caused by the backflow of electricity in the battery to the converter can be avoided, thereby improving the reliability of the converter.

[0067] Figure 1 is a schematic diagram showing an application scenario according to an exemplary embodiment. Figure 1 As shown, an on-board charger OBC is provided in the vehicle, and the on-board charger OBC includes a single-stage AC-DC converter. When charging is required, the charging gun is inserted into the AC charging pile, and then the on-board charger OBC receives the AC charging instruction, and then under the monitoring of the battery management system BMS, the on-board charger OBC charges the battery on the vehicle. For example, the on-board charger OBC converts the AC power provided by the AC charging pile into DC power to charge the battery.

[0068] Next, the converter will be described.

[0069] In the present disclosure, the converter 1 is used to convert the input AC signal into a DC signal to charge the battery, and the converter includes at least a rectifier circuit unit. In addition, the converter may also include a high-frequency bridge arm, an industrial frequency bridge arm, a filter capacitor and a transformer unit. Figure 2 FIG. 1 is a block diagram of a converter according to an exemplary embodiment. Figure 2 As shown, the converter 1 is used to convert the input AC power signal into a DC power signal to charge the battery 2. The converter 1 may include a high-frequency bridge arm 10, an industrial frequency bridge arm 20, a filter capacitor 30, a transformer unit 40, and a rectifier circuit unit 50. For example, the high-frequency bridge arm 10 may be a full-bridge circuit, and the industrial frequency bridge arm 20 may be a half-bridge circuit. The high-frequency bridge arm 10 and the industrial frequency bridge arm 20 may form a power factor correction PFC circuit unit, for example, the high-frequency bridge arm and the industrial frequency bridge arm form a single-phase interleaved totem pole PFC topology.

[0070] The filter capacitor 30 may be an electrolytic capacitor or a film capacitor.

[0071] In addition, if Figure 2As shown, the converter 1 also includes an AC power transmission port 60, which is connected to the high-frequency bridge arm 10 and the power frequency bridge arm 20 respectively, and is used to provide an AC signal to the high-frequency bridge arm 10 and the power frequency bridge arm 20. The high-frequency bridge arm 10, the power frequency bridge arm 20 and the filter capacitor 30 are connected in parallel. The transformer unit 40 is connected to the high-frequency bridge arm 10 and the rectifier circuit unit 50 respectively.

[0072] During the operation of the converter, any power device in the high-frequency bridge arm 10, the industrial-frequency bridge arm 20 and the rectifier circuit unit 50 can be controlled. The specific control method will be described in detail below.

[0073] Figure 3 FIG3 is a flow chart of a control method of a converter according to an exemplary embodiment. As shown in FIG3 , the control method may include the following steps.

[0074] In step S31, when a charging instruction is received, a reference carrier signal is generated according to the current voltage value of the battery, the target voltage value of the battery and the AC power signal.

[0075] In step S32, a first type of driving signal for controlling the operation of the rectifying circuit unit is generated at least according to the reference carrier signal, and the first type of driving signal is at least used to control the target power device in the rectifying circuit unit to be in a normally-off state.

[0076] In the present disclosure, when the target power device is in a normally-off state, its corresponding body diode is in a freewheeling state.

[0077] In step S33, the first type of driving signal is used to control the operation of the rectifier circuit unit.

[0078] By adopting the above technical solution, at least a first type of driving signal for controlling the rectifier circuit unit is generated according to the reference carrier signal, and the first type of driving signal is at least used to control the target power device in the rectifier circuit unit to be in a normally disconnected state, and the first type of driving signal is used to control the operation of the rectifier circuit unit. In this way, during the charging stage, the problem of poor charging efficiency caused by the reverse flow of electricity in the battery to the converter can be avoided, thereby improving the reliability of the converter.

[0079] It should be understood that the target power device can also be controlled to be in a synchronous rectification state. In this way, the target power device can also be controlled to be turned on while the body diode is in a freewheeling state, so that the current flows in the channel of the target power device, further reducing power loss and further improving efficiency. However, this method cannot effectively prevent the problem of reverse backflow of electricity in the battery to the converter. Therefore, whether to control the corresponding target power device to be turned on when the body diode is in a freewheeling state can be determined according to actual needs.

[0080] Below Figure 3 Each step in

[0081] In one embodiment, when receiving a charging instruction, generating a reference carrier signal according to the current voltage value of the battery, the target voltage value of the battery, and the AC signal may include: obtaining a target current value according to the difference between the current voltage value of the battery and the target voltage value of the battery; obtaining a frequency control parameter according to the target current value and the current value of the AC signal, where the frequency control parameter can indicate the frequency of the reference carrier signal to be generated; and generating a reference carrier signal according to the frequency control parameter.

[0082] Exemplarily, Figure 4 FIG. is a schematic diagram of generating a reference carrier signal according to an exemplary embodiment. As Figure 4 shown, first, the current voltage value V bat of the battery and the target voltage value V bat * are input to a voltage control loop to obtain the target current value i gd * output by the voltage control loop. Among them, the target voltage value refers to the target value of battery charging, which can be obtained from the charging instruction. In addition, according to the AC signal i g input at the current AC transmission port and the current signal output after passing through the high-frequency bridge arm and the power-frequency bridge arm and this AC signal i g , by using the rotation coordinate transformation from the αβ AC current component to the dq DC component, the current following value i g corresponding to the AC signal i gd is obtained. Then, the difference between the target current value i gd * and the current following value i gd is input to a current control loop to obtain the frequency control parameter output by the current control loop. Finally, the frequency control parameter is input to a carrier generator, and the carrier generator generates and outputs a reference carrier signal Fs according to the frequency control parameter, where the frequency of the reference carrier signal is the frequency corresponding to the frequency control parameter.

[0083] For better description, the structure of the rectifier circuit unit will be described first below.

[0084] Figure 5 FIG. is a circuit diagram of a converter according to an exemplary embodiment. As Figure 5As shown, the rectifier circuit unit 50 includes a first bridge arm 501 and a second bridge arm 502, the first bridge arm 501 includes a first power device S1 and a second power device S2, the second bridge arm 502 includes a third power device S3 and a fourth power device S4, the first power device S1 is located at the upper bridge arm of the first bridge arm 501, the second power device S2 is located at the lower bridge arm of the first bridge arm 501, the third power device S3 is located at the upper bridge arm of the second bridge arm 502, and the fourth power device S4 is located at the lower bridge arm of the second bridge arm 502. Accordingly, the target power device in the normally disconnected state may include the first power device S1 and the third power device S3 located at the upper bridge arm; or, the target power device in the normally disconnected state may include the second power device S2 and the fourth power device S4 located at the lower bridge arm.

[0085] In addition, since the first power device S1 and the third power device S3 located in the upper bridge arm are respectively connected to the positive electrode of the battery, in order to further prevent the power in the battery from flowing back to the converter, preferably, the target power device may include the first power device S1 and the third power device S3 located in the upper bridge arm.

[0086] Accordingly, the first type of driving signal includes a second driving signal for controlling the target power device to be in a normally-off state and a first driving signal for controlling the operation of other power devices in the rectifier circuit unit except the target power device. Step S32 generates the first type of driving signal for controlling the operation of the rectifier circuit unit at least according to the reference carrier signal, which may include: generating the first driving signal for controlling the operation of other power devices in the rectifier circuit unit except the target power device according to the reference carrier signal and a preset duty cycle of the driving signal.

[0087] In the present disclosure, other power devices in the rectifier circuit unit except the target power device include a first target power device and a second target power device. By way of example, it is assumed that the target power device includes a first power device S1 and a third power device S3. The first target power device may be a fourth power device S4, and the second target power device may be a second power device S2. Alternatively, the first target power device may be a second power device S2, and the second target power device may be a fourth power device S4.

[0088] The specific implementation of generating a first drive signal for controlling the operation of other power devices in the rectifier circuit unit except the target power device according to the reference carrier signal and the preset duty cycle of the drive signal can be: first, a reference signal is generated according to the reference carrier signal and the preset duty cycle of the drive signal, and the amplitude of the reference signal does not change with the phase of the AC signal. For example, the product of the duty cycle and the maximum amplitude of the reference carrier signal can be determined as the reference signal, and the reference signal is a fixed value and does not change with the phase of the AC signal. For example, assuming that the duty cycle is 50%, if the maximum amplitude of the reference carrier signal is 1, the reference signal is y=0.5. If the maximum amplitude of the reference carrier signal is 100, the reference signal is y=50.

[0089] It should be understood that the duty cycle may also be other values, but when the duty cycle is 50%, the energy transmitted by the converter is maximum, that is, the voltage utilization rate of the converter is highest.

[0090] Next, the reference signal is input to the positive input terminal of the first comparator, and the reference carrier signal is shifted to a preset phase and input to the negative input terminal of the first comparator to obtain a first sub-driving signal output by the first comparator for controlling the operation of the first target power device.

[0091] The preset phase is determined according to the phase of the AC signal. For example, the preset phase is in a linear functional relationship with the phase of the AC signal, and the specific functional relationship can be pre-calibrated through experiments. The preset phase can range from 0 to 0.5 rad.

[0092] Afterwards, the first sub-driving signal is input into the first inverter to obtain a second sub-driving signal output by the first inverter and used for controlling the operation of the second target power device.

[0093] Figure 6 FIG. 1 is a schematic diagram showing a method of generating a first driving signal according to an exemplary embodiment. Figure 6 As shown, the reference signal b is input into the positive input terminal of the first comparator A1, and the reference carrier signal Fs is input into the negative input terminal of the first comparator A1 after being phase-shifted by a preset phase, so as to obtain the first sub-driving signal output by the first comparator A1 for controlling the operation of the first target power device. In addition, the output terminal of the first comparator A1 is connected to the first inverter F1, that is, the first sub-driving signal is input into the first inverter F1, so as to obtain the second sub-driving signal output by the first inverter F1 for controlling the operation of the second target power device.

[0094] In addition, step S32 generates a first type of drive signal for controlling the operation of the rectifier circuit unit at least based on the reference carrier signal, and may also include: inputting a preset signal into the positive input terminal of the second comparator, inputting the reference carrier signal into the negative input terminal of the second comparator, obtaining a second drive signal output by the second comparator, and using the second drive signal to control the target power device to be in a normally disconnected state.

[0095] The preset signal may be a signal whose amplitude is 0, or may be any signal whose amplitude is not 0 but whose amplitude at each moment is smaller than the amplitude of the reference carrier signal at that moment, and the present disclosure does not make any specific limitation on this.

[0096] Figure 7 FIG. 1 is a schematic diagram showing a method of generating a second driving signal according to an exemplary embodiment. Figure 7 As shown, the preset signal c is input into the positive input terminal of the second comparator A2, and the reference carrier signal Fs is input into the negative input terminal of the second comparator A2 to obtain the second drive signal output by the second comparator A2. The second drive signal is a low level 0, which is used to control the target power device to be in a normally disconnected state.

[0097] The control method of the converter provided in the present disclosure can also control the high-frequency bridge arm included in the converter. In one embodiment, the control method can also include: generating a second type of drive signal for controlling the operation of the high-frequency bridge arm according to the reference carrier signal and the reference signal. There is a phase delay between the second type of drive signal and the first drive signal, and the delayed phase is the above-mentioned preset phase. For example, the first drive signal delays the second type of drive signal by a preset phase.

[0098] like Figure 5 As shown, the high-frequency bridge arm 10 includes a third bridge arm 101 and a fourth bridge arm 102, wherein the third bridge arm 101 includes a fifth power device S5 and a sixth power device S6, and the fourth bridge arm 102 includes a seventh power device S7 and an eighth power device S8. The fifth power device S5 and the eighth power device S8 form a pair of transistors, and the sixth power device S6 and the seventh power device S7 form a pair of transistors.

[0099] In this embodiment, the second type of driving signal includes a third sub-driving signal for controlling the operation of the first group of tubes and a fourth sub-driving signal for controlling the operation of the second group of tubes. The specific implementation method of generating the second type of driving signal for controlling the operation of the high-frequency bridge arm according to the reference carrier signal and the reference signal is as follows: inputting the reference carrier signal into the negative input terminal of the third comparator, inputting the reference signal into the positive input terminal of the third comparator, and obtaining the third sub-driving signal output by the third comparator for controlling the operation of the first group of tubes; inputting the third sub-driving signal into the second inverter, and obtaining the fourth sub-driving signal output by the second inverter for controlling the operation of the second group of tubes.

[0100] Among them, if the first target power device is the first power device or the fourth power device, the first group of pairs of tubes includes: a fifth power device located in the upper bridge arm of the third bridge arm in the high-frequency bridge arm and an eighth power device located in the lower bridge arm of the fourth bridge arm in the high-frequency bridge arm; if the first target power device is the second power device or the third power device, the first group of pairs of tubes includes: a sixth power device located in the lower bridge arm of the third bridge arm in the high-frequency bridge arm and a seventh power device located in the upper bridge arm of the fourth bridge arm in the high-frequency bridge arm.

[0101] Figure 8 FIG. 1 is a schematic diagram showing a method of generating a second type of driving signal according to an exemplary embodiment. Figure 8 As shown, the reference carrier signal Fs is input into the negative input terminal of the third comparator A3, and the reference signal b is input into the positive input terminal of the third comparator A3, so as to obtain the third sub-driving signal output by the third comparator A3 for controlling the operation of the first group of tube pairs. In addition, the output terminal of the third comparator A3 is connected to the input terminal of the second inverter F2, that is, the third sub-driving signal is input into the second inverter F2, so as to obtain the fourth sub-driving signal output by the second inverter F2 for controlling the operation of the second group of tube pairs.

[0102] In one possible manner, assuming that the target power devices in the normally-off state are the second power device S2 and the fourth power device S4, if the first target power device is the first power device S1, the first group of pairs of tubes includes the fifth power device S5 and the eighth power device S8, and the second group of pairs of tubes includes the sixth power device S6 and the seventh power device S7; if the first target power device is the third power device S3, the first group of pairs of tubes includes the sixth power device S6 and the seventh power device S7, and the second group of pairs of tubes includes the fifth power device S5 and the eighth power device S8.

[0103] In another possible manner, assuming that the target power devices in the normally-off state are the first power device S1 and the third power device S3, if the first target power device is the fourth power device S4, the first group of pairs of tubes includes the fifth power device S5 and the eighth power device S8, and the second group of pairs of tubes includes the sixth power device S6 and the seventh power device S7; if the first target power device is the second power device S2, the first group of pairs of tubes includes the sixth power device S6 and the seventh power device S7, and the second group of pairs of tubes includes the fifth power device S5 and the eighth power device S8.

[0104] Fig. 9 FIG. 1 is a schematic diagram showing a driving signal according to an exemplary embodiment. Fig. 9As shown, there is a delay of a preset phase φ between the first sub-driving signal output by the first comparator A1 and the third sub-driving signal output by the third comparator A3, and there is a delay of a preset phase φ between the second sub-driving signal output by the first inverter F1 and the fourth sub-driving signal output by the second inverter F2. That is, the power devices corresponding to the primary and secondary sides of the transformer unit 40 are not turned on at the same time, and there is a certain phase delay. For example, assuming that the target power devices in the normally off state are the first power device S1 and the third power device S3, the fifth power device S5 and the eighth power device S8 on the primary side of the transformer unit 40 and the fourth power device S4 on the secondary side of the transformer unit 40 are not turned on at the same time, and there is a certain phase delay.

[0105] Among them, Fig. 9 As shown, the duty cycles of the first to fourth sub-driving signals are all 50%.

[0106] For example, in Figure 5 In the figure, the transformer unit 40 includes a resonant inductor Ls, a transformer primary resonant capacitor Cr, a transformer secondary resonant capacitor Cs and a transformer T. Among them, one end of the resonant inductor Ls is connected to the midpoint a of the third bridge arm 101 in the high-frequency bridge arm 10, and the other end is connected to the midpoint b of the fourth bridge arm 102 in the high-frequency bridge arm 10 via the primary side of the transformer T and the transformer primary resonant capacitor Cr, one end of the secondary side of the transformer T is connected to the midpoint c of the first bridge arm 501 in the rectifier circuit unit 50, and the other end of the secondary side of the transformer T is connected to the midpoint d of the second bridge arm 502 in the rectifier circuit unit 50 via the transformer secondary resonant capacitor Cs.

[0107] Combination Figure 5 In the converter shown, it is assumed that the first power device S1 and the third power device S3 are in a normally disconnected state, and the high-frequency bridge arm works under the drive of the second type of driving signal, and the AC power grid energy is stored in the transformer unit 40. After that, after a preset phase delay, when the fourth power device S4 is turned on and the second power device S2 is turned off, the resonant power energy is stored in the transformer unit 40. In addition, when the second power device S2 is turned on and the fourth power device S4 is turned off, the negative electrode of the battery is connected to one end of the secondary side of the transformer T via the second power device S2 and the midpoint c, and the other end of the secondary side of the transformer T is connected to the positive electrode of the battery via the midpoint d and the body diode of the fourth power device S4, so as to charge the battery with the AC power grid energy and the resonant power energy stored in the transformer unit 40. In this way, the gain of the converter output voltage is improved, thereby improving the charging efficiency.

[0108] By adopting the above technical solution, the target power device in the rectifier circuit unit is in a normally disconnected state, and other power devices in the rectifier circuit unit are in a modulation state, and there is a phase delay between the drive signal used when modulating other power devices and the drive signal used when modulating the primary power device of the transformer unit. In this way, the output voltage gain and charging efficiency are improved while preventing the reverse flow of battery energy and improving the reliability of the converter.

[0109] In addition, the power frequency bridge arm can also be controlled. For example, Figure 5 As shown, the converter further includes an industrial frequency bridge arm 20, and the industrial frequency bridge arm 20 includes a ninth power device S9 and a tenth power device S10, the ninth power device S9 is located at the upper bridge arm of the industrial frequency bridge arm 20, and the tenth power device S10 is located at the lower bridge arm of the industrial frequency bridge arm 20. In the present disclosure, the ninth power device S9 and the tenth power device S10 can be controlled according to an alternating current signal.

[0110] For example, the cycle of the AC signal includes a positive half cycle and a negative half cycle. In the positive half cycle, the tenth power device S10 is controlled to be turned on and the ninth power device S9 is turned off; and in the negative half cycle, the tenth power device S10 is controlled to be turned off and the ninth power device S9 is turned on.

[0111] In addition, Figure 5 In the embodiment, the AC power transmission port 60 may include an AC power source v g and a boost inductor, wherein the boost inductor can be two independent inductors denoted as L1 and L2, wherein one end of L1 and L2 are both connected to the AC power supply v g The other ends of L1 and L2 are connected to the midpoint a of the first bridge arm 501 and the midpoint b of the second bridge arm 502, respectively. AC power supply v g The negative terminal of is connected to the midpoint e of the power frequency bridge arm 20. The third bridge arm, the fourth bridge arm and the power frequency bridge arm form a single-phase staggered totem pole PFC topology structure, which can improve the conversion efficiency, reduce the current ripple of the input AC power, and improve the quality of the input AC power.

[0112] It should be understood that the above description is only for the control method of the converter in the charging mode. Figure 5The converter shown can also operate in an inverter mode. When the converter operates in a charging mode, the range of the preset phase of the delay of the primary and secondary drive signals of the transformer is 0 to 0.5, the output electrical signal pulsates at 2 times the frequency of the alternating current, and the preset phase of the delay reaches a maximum value at the voltage zero point of the alternating current signal. When the converter operates in an inverter mode, the range of the preset phase of the delay of the primary and secondary drive signals of the transformer is -0.15 to 0, the output electrical signal pulsates at 2 times the frequency of the alternating current, and the preset phase of the delay reaches a maximum value at the peak of the alternating current signal. In this way, in both the charging mode and the inverter mode, the voltage gain can be improved within the full cycle of the alternating current signal.

[0113] Based on the same inventive concept, the present disclosure also provides a control device for a converter. Fig.10 is a block diagram of a control device of a converter according to an exemplary embodiment, wherein the converter is used to convert an input AC signal into a DC signal for charging a battery, and the converter includes a rectifier circuit unit. Fig.10 As shown, the control device 100 of the converter may include:

[0114] The first generating module 1001 is configured to generate a reference carrier signal according to a current voltage value of the battery, a target voltage value of the battery and the AC power signal when receiving a charging instruction;

[0115] The second generating module 1002 is configured to generate a first type of driving signal for controlling the operation of the rectifying circuit unit at least according to the reference carrier signal, wherein the first type of driving signal is at least used to control a target power device of the rectifying circuit unit to be in a normally-off state;

[0116] The first control module 1003 is configured to control the operation of the rectifier circuit unit using the first type of driving signal.

[0117] Optionally, the rectifier circuit unit includes a first bridge arm and a second bridge arm, the first bridge arm includes a first power device and a second power device, the second bridge arm includes a third power device and a fourth power device, the first power device is located at an upper bridge arm of the first bridge arm, the second power device is located at a lower bridge arm of the first bridge arm, the third power device is located at an upper bridge arm of the second bridge arm, and the fourth power device is located at a lower bridge arm of the second bridge arm;

[0118] The target power device includes the first power device and the third power device; or, the target power device includes the second power device and the fourth power device.

[0119] Optionally, the first type of driving signal includes a second driving signal for controlling the target power device to be in a normally-off state and a first driving signal for controlling other power devices in the rectifying circuit unit except the target power device to work; the second generating module 1003 may include:

[0120] The first generating submodule is configured to generate a first driving signal for controlling the operation of other power devices in the rectifying circuit unit except the target power device according to the reference carrier signal and a preset duty cycle of the driving signal.

[0121] Optionally, other power devices in the rectifier circuit unit except the target power device include a first target power device and a second target power device;

[0122] The first generating submodule is configured to: generate a reference signal according to the reference carrier signal and a preset duty cycle of the driving signal, wherein the amplitude of the reference signal does not change with the phase of the alternating current signal;

[0123] Input the reference signal to the positive input terminal of the first comparator, shift the reference carrier signal by a preset phase and input it to the negative input terminal of the first comparator, so as to obtain a first sub-driving signal output by the first comparator for controlling the operation of the first target power device;

[0124] The first sub-driving signal is input into a first inverter to obtain a second sub-driving signal output by the first inverter for controlling the operation of the second target power device.

[0125] Optionally, the second generating module 1003 may further include:

[0126] The second generating submodule is configured to input a preset signal into the positive input terminal of a second comparator, input the reference carrier signal into the negative input terminal of the second comparator, and obtain a second drive signal output by the second comparator, wherein the second drive signal is used to control the target power device to be in a normally disconnected state.

[0127] Optionally, the converter includes a high-frequency bridge arm, and the control device 100 of the converter may further include:

[0128] A third generating module is configured to generate a second type of driving signal for controlling the operation of the high-frequency bridge arm according to the reference carrier signal and the reference signal, wherein the first driving signal delays the second type of driving signal by a preset phase;

[0129] The second control module is configured to control the operation of the high-frequency bridge arm using the second type of driving signal.

[0130] Optionally, the high-frequency bridge arm includes a first group of pairs of tubes and a second group of pairs of tubes, and the second type of driving signal includes a third sub-driving signal for controlling the operation of the first group of pairs of tubes and a fourth sub-driving signal for controlling the operation of the second group of pairs of tubes; the third generating module is configured as follows:

[0131] Input the reference carrier signal into the negative input terminal of the third comparator, input the reference signal into the positive input terminal of the third comparator, and obtain a third sub-driving signal output by the third comparator for controlling the operation of the first group of tubes;

[0132] Inputting the third sub-driving signal into the second inverter to obtain a fourth sub-driving signal output by the second inverter for controlling the operation of the second group of transistors;

[0133] Among them, if the first target power device is the first power device or the fourth power device, the first group of pairs of tubes includes: a fifth power device located in the upper bridge arm of the third bridge arm in the high-frequency bridge arm and an eighth power device located in the lower bridge arm of the fourth bridge arm in the high-frequency bridge arm; if the first target power device is the second power device or the third power device, the first group of pairs of tubes includes: a sixth power device located in the lower bridge arm of the third bridge arm in the high-frequency bridge arm and a seventh power device located in the upper bridge arm of the fourth bridge arm in the high-frequency bridge arm.

[0134] Optionally, the cycle of the AC signal includes a positive half cycle and a negative half cycle; the converter further includes an industrial frequency bridge arm, the industrial frequency bridge arm includes a ninth power device and a tenth power device, the ninth power device is located at an upper bridge arm of the industrial frequency bridge arm, and the tenth power device is located at a lower bridge arm of the industrial frequency bridge arm; the control device 100 of the converter may further include:

[0135] A third control module is configured to control the tenth power device to be turned on and the ninth power device to be turned off during the positive half cycle;

[0136] The fourth control module is configured to control the tenth power device to be turned off and the ninth power device to be turned on during the negative half cycle.

[0137] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0138] The present disclosure also provides a computer-readable storage medium having computer program instructions stored thereon. When the program instructions are executed by a processor, the steps of the converter control method provided by the present disclosure are implemented.

[0139] Based on the same inventive concept, the present disclosure also provides a control device, including: a processor;

[0140] a memory for storing processor-executable instructions;

[0141] The processor is configured to execute the instructions to implement the steps of the converter control method provided in the present disclosure.

[0142] By way of example, the control device may be a controller.

[0143] Based on the same inventive concept, the present disclosure also provides a vehicle-mounted charger, comprising: a converter and a control device provided by the present disclosure.

[0144] Based on the same inventive concept, the present disclosure also provides a vehicle, which includes a battery and the on-board charger provided by the present disclosure, and the on-board charger charges the battery.

[0145] Fig.11 600 is a block diagram of a vehicle according to an exemplary embodiment. For example, vehicle 600 may be a hybrid vehicle, a non-hybrid vehicle, an electric vehicle, a fuel cell vehicle, or other types of vehicles. Vehicle 600 may be an autonomous vehicle, a semi-autonomous vehicle, or a non-autonomous vehicle.

[0146] Reference Fig.11 , the vehicle 600 may include various subsystems, for example, an infotainment system 610, a perception system 620, a decision control system 630, a drive system 640, and a computing platform 650. The vehicle 600 may also include more or fewer subsystems, and each subsystem may include multiple components. In addition, each subsystem and each component of the vehicle 600 may be interconnected by wire or wireless means. In addition, the vehicle 600 may also include an on-board charger.

[0147] In some embodiments, the infotainment system 610 may include a communication system, an entertainment system, and a navigation system, among others.

[0148] The perception system 620 may include several sensors for sensing information about the environment around the vehicle 600. For example, the perception system 620 may include a global positioning system (the global positioning system may be a GPS system, or a Beidou system or other positioning systems), an inertial measurement unit (IMU), a laser radar, a millimeter wave radar, an ultrasonic radar, and a camera.

[0149] The decision control system 630 may include a computing system, a vehicle controller, a steering system, a throttle, and a braking system.

[0150] The drive system 640 may include components that provide powered motion for the vehicle 600. In one embodiment, the drive system 640 may include an engine, an energy source, a transmission system, and wheels. The engine may be one or a combination of an internal combustion engine, an electric motor, and an air compression engine. The engine is capable of converting energy provided by the energy source into mechanical energy.

[0151] Some or all functions of the vehicle 600 are controlled by a computing platform 650. The computing platform 650 may include at least one processor 651 and a memory 652, and the processor 651 may execute instructions 653 stored in the memory 652.

[0152] The processor 651 may be any conventional processor, such as a commercially available CPU. The processor may also include a graphics processor (Graphic Process Unit, GPU), a field programmable gate array (Field Programmable Gate Array, FPGA), a system on chip (System on Chip, SOC), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC) or a combination thereof.

[0153] The memory 652 may be implemented by any type of volatile or nonvolatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0154] In addition to the instructions 653 , the memory 652 may also store data, such as road maps, route information, and data such as the location, direction, and speed of the vehicle. The data stored in the memory 652 may be used by the computing platform 650 .

[0155] In the embodiment of the present disclosure, the processor 651 may execute the instruction 653 to complete all or part of the steps of the above-mentioned converter control method.

[0156] In another exemplary embodiment, a computer program product is also provided. The computer program product includes a computer program executable by a programmable device, and the computer program has a code portion for executing the control method of the converter described above when executed by the programmable device.

[0157] In addition, the word "exemplary" is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as "exemplary" is not necessarily to be construed as advantageous over other aspects or designs. Rather, the word exemplary is intended to present concepts in a concrete fashion. As used herein, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or". That is, unless specified otherwise or clear from the context, "X applies A or B" is intended to mean any of the natural inclusive permutations. That is, if X applies A; X applies B; or X applies both A and B, then "X applies A or B" is satisfied under any of the foregoing instances. Additionally, unless specified otherwise or clear from the context that it is referring to the singular form, the articles "a" and "an" as used in this application and the appended claims are generally understood to mean "one or more".

[0158] Likewise, although the present disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding the specification and the drawings. The present disclosure includes all such modifications and variations and is limited only by the scope of the claims. Specifically with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terms used to describe such components are intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if not structurally equivalent to the disclosed structure. Additionally, although a particular feature of the present disclosure may have been disclosed with respect to only one of several implementations, such a feature may, as may be desired and advantageous for any given or particular application, be combined with one or more other features of other implementations. Further, with respect to the use of "comprises", "comprising", "has", "having", "includes", or variants thereof in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term "including".

[0159] Other embodiments of the present disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known in the art or conventional techniques not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

[0160] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

[0161] It should be understood that, unless otherwise specifically noted, the features of some embodiments of the various present disclosures described herein may be combined with each other. As used herein, the term "and / or" includes any one of the related listed items and any combination of any two or more; similarly, "at least one of . . . " includes any one of the related listed items and any combination of any two or more.

[0162] Although terms such as "first", "second" and "third" can be used herein to describe various components, parts, regions, layers or sections, these components, parts, regions, layers or sections are not limited to these terms. On the contrary, these terms are only used to distinguish one component, component, region, layer or section from another component, component, region, layer or section. Therefore, without departing from the teachings of each example, the first component, component, region, layer or section mentioned in the examples described herein may also be referred to as the second component, component, region, layer or section. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may expressly or implicitly include at least one of the features. In the description herein, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

Claims

1. A control method for a converter, characterized in that: The converter is used to convert an input AC signal into a DC signal to charge the battery, the converter includes a rectifier circuit unit, and the control method includes: When receiving a charging instruction, generating a reference carrier signal according to a current voltage value of the battery, a target voltage value of the battery and the AC power signal; generating a first type of drive signal for controlling the operation of the rectifier circuit unit at least according to the reference carrier signal, wherein the first type of drive signal is at least used to control a target power device in the rectifier circuit unit to be in a normally-off state; The first type of driving signal is used to control the operation of the rectifier circuit unit.

2. The control method according to claim 1, characterized in that: The rectifier circuit unit includes a first bridge arm and a second bridge arm, the first bridge arm includes a first power device and a second power device, the second bridge arm includes a third power device and a fourth power device, the first power device is located at an upper bridge arm of the first bridge arm, the second power device is located at a lower bridge arm of the first bridge arm, the third power device is located at an upper bridge arm of the second bridge arm, and the fourth power device is located at a lower bridge arm of the second bridge arm; The target power device includes the first power device and the third power device; or, the target power device includes the second power device and the fourth power device.

3. The control method according to claim 2, characterized in that: The first type of driving signal includes a second driving signal for controlling the target power device to be in a normally-off state and a first driving signal for controlling other power devices in the rectifying circuit unit except the target power device; The step of generating a first type of driving signal for controlling the operation of the rectifying circuit unit at least according to the reference carrier signal comprises: A first driving signal for controlling the operation of other power devices in the rectifying circuit unit except the target power device is generated according to the reference carrier signal and a preset duty cycle of the driving signal.

4. The control method according to claim 3, characterized in that: The other power devices in the rectifier circuit unit except the target power device include a first target power device and a second target power device; The step of generating a first driving signal for controlling the operation of other power devices in the rectifying circuit unit except the target power device according to the reference carrier signal and the preset duty cycle of the driving signal includes: Generate a reference signal according to the reference carrier signal and the preset duty cycle of the driving signal, wherein the amplitude of the reference signal does not change with the phase of the alternating current signal; Input the reference signal to the positive input terminal of the first comparator, shift the reference carrier signal by a preset phase and input it to the negative input terminal of the first comparator, so as to obtain a first sub-driving signal output by the first comparator for controlling the operation of the first target power device; The first sub-driving signal is input into a first inverter to obtain a second sub-driving signal output by the first inverter for controlling the operation of the second target power device.

5. The control method according to claim 3, characterized in that: The generating of the first type of driving signal for controlling the operation of the rectifying circuit unit at least according to the reference carrier signal further comprises: The preset signal is input into the positive input terminal of the second comparator, and the reference carrier signal is input into the negative input terminal of the second comparator to obtain a second drive signal output by the second comparator, wherein the second drive signal is used to control the target power device to be in a normally disconnected state.

6. The control method according to claim 4, characterized in that: The converter includes a high-frequency bridge arm, and the control method further includes: Generate a second type of driving signal for controlling the operation of the high-frequency bridge arm according to the reference carrier signal and the reference signal, wherein the first driving signal delays the second type of driving signal by a preset phase; The second type of driving signal is used to control the operation of the high-frequency bridge arm.

7. The control method according to claim 6, characterized in that: The high-frequency bridge arm includes a first group of pairs of tubes and a second group of pairs of tubes, and the second type of driving signal includes a third sub-driving signal for controlling the operation of the first group of pairs of tubes and a fourth sub-driving signal for controlling the operation of the second group of pairs of tubes; The step of generating a second type of driving signal for controlling the operation of the high-frequency bridge arm according to the reference carrier signal and the reference signal comprises: Input the reference carrier signal into the negative input terminal of the third comparator, input the reference signal into the positive input terminal of the third comparator, and obtain a third sub-driving signal output by the third comparator for controlling the operation of the first group of tubes; Inputting the third sub-driving signal into the second inverter to obtain a fourth sub-driving signal output by the second inverter for controlling the operation of the second group of transistors; Among them, if the first target power device is the first power device or the fourth power device, the first group of pairs of tubes includes: a fifth power device located in the upper bridge arm of the third bridge arm in the high-frequency bridge arm and an eighth power device located in the lower bridge arm of the fourth bridge arm in the high-frequency bridge arm; if the first target power device is the second power device or the third power device, the first group of pairs of tubes includes: a sixth power device located in the lower bridge arm of the third bridge arm in the high-frequency bridge arm and a seventh power device located in the upper bridge arm of the fourth bridge arm in the high-frequency bridge arm.

8. The control method according to any one of claims 1 to 7, characterized in that: The cycle of the AC signal includes a positive half cycle and a negative half cycle; the converter also includes an industrial frequency bridge arm, the industrial frequency bridge arm includes a ninth power device and a tenth power device, the ninth power device is located at an upper bridge arm of the industrial frequency bridge arm, and the tenth power device is located at a lower bridge arm of the industrial frequency bridge arm; The control method further comprises: In the positive half cycle, controlling the tenth power device to be turned on and the ninth power device to be turned off; In the negative half cycle, the tenth power device is controlled to be turned off and the ninth power device is controlled to be turned on.

9. The control method according to any one of claims 1 to 5, characterized in that: The method of generating a reference carrier signal according to a current voltage value of a battery, a target voltage value of the battery and the AC power signal upon receiving a charging instruction comprises: Obtaining a target current value according to a difference between a current voltage value of the battery and a target voltage value of the battery; Obtaining a frequency control parameter according to the target current value and the current value of the AC power signal, wherein the frequency control parameter can indicate the frequency of a reference carrier signal to be generated; A reference carrier signal is generated according to the frequency control parameter.

10. A control device for a converter, characterized in that: The converter is used to convert an input AC signal into a DC signal to charge the battery. The converter includes a rectifier circuit unit. The control device of the converter includes: A first generating module is configured to generate a reference carrier signal according to a current voltage value of the battery, a target voltage value of the battery and the AC power signal when receiving a charging instruction; A second generating module is configured to generate a first type of driving signal for controlling the operation of the rectifying circuit unit at least according to the reference carrier signal, wherein the first type of driving signal is at least used to control a target power device of the rectifying circuit unit to be in a normally disconnected state; The first control module is configured to control the operation of the rectifier circuit unit using the first type of driving signal.

11. A control device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the instructions to implement the steps of the converter control method according to any one of claims 1 to 9.

12. A vehicle-mounted charger, characterized in that: include: A converter and a control device as claimed in claim 11.

13. A vehicle, characterized in that: include: A battery and an on-vehicle charger as claimed in claim 12.

14. A computer-readable storage medium having computer program instructions stored thereon, characterized in that: When the computer program instructions are executed by a processor, the steps of the method according to any one of claims 1 to 9 are implemented.

15. A computer program product, characterized in that The invention comprises a computer program, which, when executed by a processor, implements the steps of the method according to any one of claims 1 to 9.

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